NAHMIAS, Justice.
Appellant Robert Veal challenges his convictions for numerous crimes, including murder and rape, committed in the course of two armed robberies on November 22, 2010. He contends that the evidence at trial as to one set of crimes was insufficient to corroborate the testimony of his accomplice; we reject that contention and affirm all of the convictions. Appellant also contends that the two counts charging him with criminal street gang activity should have merged for sentencing; we reject that contention as well, although we have identified a merger error made in Appellant’s favor on an armed robbery count, which the trial court should correct on remand. Finally, Appellant, who was 17V2 years old at the time of the crimes,
contends that the trial court erred in sentencing him to life without parole (“LWOP”) for malice murder. Based on the United States Supreme Court’s recent decision in
Montgomery v.
Louisiana, _ U. S. _ (136 SCt 718, 193 LE2d 599) (2016), we agree that Appellant’s LWOP sentence must be vacated, and we therefore remand the case for resentencing on the murder count.
1. Viewed in the light most favorable to the verdicts, the evidence at trial showed the following. On the night of the crimes, Lisa McGraw and her boyfriend, Charles Boyer, returned from a trip to a convenience store to her apartment complex in the Virginia Highlands neighborhood of Atlanta. They were walking toward her apartment when Boyer returned to his car to retrieve something he had forgotten. As McGraw continued toward the apartment, she felt a gun placed to her head and heard a voice from behind ordering her not to turn around. McGraw realized that two men were behind her, and that a third man was with Boyer.
The men ordered Boyer and McGraw to walk to their apartment and to hand over their keys. McGraw gave the men her purse, and then she and Boyer tried to run away. McGraw made it safely into her neighbor’s apartment, but Boyer did not. Chris Miller, a neighbor walking his dog, heard a commotion and approached to get a better look. Miller saw Boyer holding a grocery bag and facing three assailants. When Miller saw that one of the assailants had on a mask, he realized that a robbery was occurring and turned back. Miller then heard three gunshots and ran inside his apartment to call 911. The
three men fled the scene. Boyer died from gunshot wounds to the torso. His injuries were consistent with his being in a struggle and trying to block a gun from shooting at him and then being shot again while trying to free himself.
Several hours later, John Davis saw three men drive up in a gold Toyota sedan as he walked outside his apartment in the Grant Park neighborhood, which is a few miles away from Virginia Highlands. The men confronted Davis and ordered him at gunpoint to go to his apartment, and all four men went inside, where they found Davis’s roommate, C.T., in bed with her boyfriend, Joseph Oliver. The assailants tied up Davis and Oliver in separate rooms. They then moved C.T. down the hallway to Davis’s bedroom, where they raped and sodomized her. DNA from C.T.’s rape kit was later determined to match Appellant’s.
The police put together a task force to find the perpetrators of these crimes and other similar crimes in the area. Two days later, the police tracked Boyer’s missing cell phone to a black Toyota SUV, which had been abandoned at the Lakewood MARTA Station; the SUV had been stolen by Tamario Wise and another individual a few days before the Boyer shooting. The police also found C.T.’s cell phone in a bag with other stolen phones and belongings on the side of Bicknell Road.
About a month later, the police located and interviewed Raphael Cross as a suspect in the November 22 crimes. During the interview, Cross named Appellant and Wise as his accomplices in both armed robberies. Cross said that the group set out that evening with the intent of finding people to rob, and Appellant and Wise, who were armed, had killed Boyer. Following the interview, Cross was arrested and Appellant and Wise were located and arrested. Further investigation found text messages between Appellant, Wise, and Cross talking about wiping down the black SUV to remove any fingerprints after the SUV had been shown on the television news after the murder. Appellant also sent a text to Wise that said, “PITTSBURGH JACKCITY 15 ROBERTHO F**K EVERYBODY.” Evidence presented at trial showed that Appellant, Wise, and Cross were members of the Jack Boys gang, which hails from the Pittsburgh area of Atlanta. Additional evidence, including the bag of stolen cell phones and belongings found on Bicknell Road as well as testimony from other victims, showed that the Jack Boys had been involved in several armed robberies in Atlanta prior to the November 22 crimes.
At the joint trial of Appellant and Wise, Cross testified as follows. On the evening of the crimes, Appellant and Wise picked Cross up in a dark-colored SUV, and the three men drove to the Virginia Highlands neighborhood. They pulled up at an apartment complex where
they saw a man and a woman walking. Appellant and Wise exited the vehicle to rob the couple, and Cross got out shortly after. He saw the man struggle with Appellant and Wise, and then saw Wise shoot the man. After the shooting, the three men returned to the SUV and then switched to a gold Toyota Camry before continuing to the Grant Park area and committing the crimes against Davis, Oliver, and C.T.
Appellant and Wise did not testify. Appellant did not dispute his guilt of the charges related to the Grant Park crimes (to which he was linked by his DNA), but argued that he was not present during Boyer’s shooting.
When viewed in the light most favorable to the verdicts, the evidence presented at trial and summarized above was sufficient as a matter of constitutional due process to authorize a rational jury to find Appellant guilty beyond a reasonable doubt of the crimes, for which he was convicted. See
Jackson v. Virginia,
443 U. S. 307, 319 (99 SCt 2781, 61 LE2d 560) (1979). See also OCGA § 16-2-20 (defining parties to a crime);
Vega v. State,
285 Ga. 32, 33 (673 SE2d 223) (2009) (“ Tt was for the jury to determine the credibility of the witnesses and to resolve any conflicts or inconsistencies in the evidence.’ ” (citation omitted)).
2. Appellant asserts that his convictions related to the Virginia Highlands crimes must be reversed because the State presented insufficient evidence to corroborate the accomplice testimony of Cross identifying Appellant as a participant. Under former OCGA § 24-4-8:
The testimony of a single witness is generally sufficient to establish a fact. However, in certain cases, including . . . felony cases where the only witness is an accomplice, the testimony of a single witness is not sufficient. Nevertheless, corroborating circumstances may dispense with the necessity for the testimony of a second witness, except in prosecutions for treason.
We have explained that under this statute,
sufficient corroborating evidence may be circumstantial, it may be slight, and it need not of itself be sufficient to warrant a conviction of the crime charged. It must, however, be independent of the accomplice testimony and must directly
connect the defendant with the crime, or lead to the inference that he is guilty. Slight evidence from an extraneous source identifying the accused as a. participant in the criminal act is sufficient corroboration of the accomplice to support a verdict.
Clark v. State,
296 Ga. 543, 547 (769 SE2d 376) (2015) (citation omitted).
In this case, Cross’s testimony that Appellant participated with him and Wise in the Virginia Highlands crimes was corroborated by the evidence that the three men were all members of the Jack Boys gang and just hours later, Appellant committed a similar armed robbery with Cross and Wise in Grant Park, a nearby neighborhood. In addition, text messages that Appellant sent to Cross and Wise after the murder asked if they had wiped fingerprints off the black Toyota SUV in which Boyer’s stolen cell phone was found. And the cell phone stolen from C.T., Appellant’s Grant Park rape victim, was found on Bicknell Road with other items stolen by the Jack Boys. Viewed as a whole, the evidence corroborating Cross’s testimony was sufficient to satisfy the requirement of former OCGA § 24-4-8. See
Alatise v. State,
291 Ga. 428, 432 (728 SE2d 592) (2012).
3. Appellant was convicted and sentenced separately for two counts of participation in criminal street gang activity based on his participation in the murder of Boyer and the rape of C.T. while associated with the Jack Boys gang. OCGA § 16-15-4 (a) provides:
It shall be unlawful for any person employed by or associated with a criminal street gang to conduct or participate in criminal street gang activity through the commission of any offense enumerated in paragraph (1) of Code Section 16-15-3.
Under OCGA § 16-15-3 (1), “criminal gang activity” means “the commission, attempted commission, conspiracy to commit, or solicitation, coercion, or intimidation of another person to commit any of the following offenses,” including murder, see OCGA § 16-15-3 (1) (J), and rape, see OCGA § 16-15-3 (1) (C).
Appellant contends that the trial court should have imposed only one sentence for criminal street gang activity, even though he committed two offenses separately enumerated under OCGA § 16-15-3 (1) at different locations and different times against different victims. Nothing in the statute requires that all gang-related offenses be gathered into a single gang activity charge or that all such offenses must merge for sentencing. Instead, the statute makes clear that it can be violated “through the commission of
any
[enumerated] offense,”
OCGA § 16-15-4 (a) (emphasis added), and OCGA § 16-15-4 (m) says that “[a]ny crime committed in violation of this Code section shall be considered a separate offense.” Under the circumstances of this case, Appellant’s contention fails as a matter of fact and of law.
4. While the merger error suggested by Appellant does not exist, in reviewing his sentences we have identified a merger error that was made in his favor, which the trial court should correct on remand. See
Hulett v. State,
296 Ga. 49, 54 (766 SE2d 1) (2014) (explaining that this Court may correct a merger error noticed on direct appeal even if the issue was not raised by the parties). The trial court merged the count charging Appellant with armed robbery against Boyer (Count 54) into the malice murder count (Count 47). But those counts do not merge, “ ‘because malice murder has an element that must be proven (death of the victim) that armed robbery does not, and armed robbery has an element (taking of property) that malice murder does not.’ ” Id. at 55-56 (citation omitted). Accordingly, we vacate the trial court’s judgment as to Count 54 and direct the court on remand to sentence Appellant for the additional armed robbery. See id. at 56.
5. Finally, Appellant, who was 17V2 years old at the time of his crimes, contends that his sentence of LWOP for his malice murder conviction constitutes cruel and unusual punishment in violation of the Eighth Amendment to the United States Constitution. The Supreme Court of the United States recently made it clear that he is correct.
(a) Over the past decade, the Supreme Court has applied its “evolving standards of decency” theory of the Eighth Amendment to promulgate ever-increasing constitutional restrictions on the states’ authority to impose criminal sentences on juvenile offenders. In 2005, the Court held that the Eighth Amendment now categorically forbids imposing a death sentence on juveniles, which the Court defined categorically as offenders who had not yet turned 18. See
Roper v. Simmons,
543 U. S. 551, 568, 574 (125 SCt 1183, 161 LE2d 1) (2005) (deeming
Stanford v. Kentucky,
492 U. S. 361 (109 SCt 2969, 106 LE2d 306) (1989), which just 16 years earlier had upheld the death penalty for offenders older than 16, “no longer controlling”). Five years later, the Court held that the Eighth Amendment now categorically prohibits sentencing a juvenile to serve life in prison without possibility of parole for an offense other than homicide. See
Graham v. Florida,
560 U. S. 48, 82 (130 SCt 2011, 176 LE2d 825) (2010). And two years after that, the Court held that the Eighth Amendment also bars
“mandatory
life without parole [sentences] for those under the age of 18 at the time of their crimes.”
Miller v.
Alabama, _ U. S. _ (132 SCt 2455, 183 LE2d 407) (2012) (emphasis added). See also id. at 2469 (“We therefore hold that the Eighth Amendment forbids a
sentencing scheme that mandates life in prison without possibility of parole for juvenile offenders.”).
(b) This case was tried three months after
Miller
came down. After the jury found Appellant guilty of malice murder (and many other crimes) on October 11, 2012, the trial court put off his sentencing for more than five weeks, to November 19. At the sentencing hearing, however, neither party offered any new evidence, nor did either party or the court mention
Miller
or its holding.
In arguing in mitigation of punishment, Appellant’s trial counsel did, however, focus on the fact that his client was “very young at the time [of the crimes]. He was 17.” Counsel noted Appellant’s remorse for the rape of C.T., although Appellant then (as now) claimed to have had no involvement in the murder of Charles Boyer and the other Virginia Highlands crimes. Counsel asserted that Appellant was vulnerable to Wise’s solicitation to become involved in the crimes, and asked the court to “show some mercy” to Appellant because he was not a “lost cause” and “given some time, which he is obviously going to get, ... he is going to be a changed person at some point.” Counsel added that “[a]t 17, . . . you think differently than when you are 40. And . .. when he gets to be an older man, Judge, he is going to wake up and realize that.” Noting that the State was going to ask for a life without parole sentence, Appellant’s counsel argued that “it’s going to be a waste of a life,... because I don’t believe that he is going to be the kind of person that would do that for his entire life, these kind[s] of crimes.”
In response, the prosecutor noted that the court had heard from “many, many victims” at Wise’s sentencing hearing the week before and urged the court to consider that information in sentencing Appellant.
The prosecutor emphasized that this is a “brutal case” with respect to both the Virginia Highlands and Grant Park crimes, and he recommended the maximum LWOP sentence for the murder, arguing that the deterrent effect of imposing a penalty for murder greater than the life sentences Appellant faced for his other crimes “outweighs the slim possibility that he may have some moment of self-reflection 30 years down the road.”
When it came time for sentencing, the trial court made no explicit mention of Appellant’s age or its attendant characteristics, saying only: “based on the evidence and, in particular — please make sure all cell phones are turned off . . . — it’s the intent of the court that the defendant be sentenced to the maximum.” The court then imposed a sentence of LWOP for the murder to run consecutively to the six consecutive life-with-parole sentences plus the 60 more consecutive years the court imposed for the other convictions (with another armed robbery sentence still to be imposed on remand).
Two years later, with the assistance of new counsel, Appellant filed an amended motion for new trial, raising for the first time a claim that his LWOP murder sentence was unconstitutional under
Miller.
At the hearing on the motion, neither party offered any new evidence on this issue. Appellant’s new counsel argued, however, that the trial court had not made any “specific findings of fact” at sentencing as to why the LWOP punishment was proper for Appellant, who was “technically a minor” at the time of the crimes. As a remedy, Appellant asked for a new sentencing hearing.
The trial court denied the motion. Citing this Court’s decisions in
Jones v. State,
296 Ga. 663, 666-667 (769 SE2d 901) (2015), and
Brinkley v. State,
291 Ga. 195, 196 (728 SE2d 598) (2012), the court first held that Appellant’s constitutional challenge to his sentence was untimely, as it had not been raised before sentencing but rather for the first time two years later in his amended motion for new trial. The court then alternatively denied the claim on the merits, stating: “As the Court indicated at that time, its sentence was based upon the evidence in the case which included [Appellant’s] involvement in several savage and barbaric crimes and also included evidence of [Appellant’s] age.”
(c) Had this appeal been decided before
Montgomery,
we might have upheld the trial court’s rulings on Appellant’s belated
Miller-based
Eighth Amendment claim. To begin with, because
Miller
did not purport to prohibit LWOP sentences for juvenile murderers, so long as sentencing courts properly exercise discretion in imposing such sentences,
Miller
appeared to establish a
procedural
rule — a
process
which, if the sentencing court did not follow it correctly, would result in a juvenile’s LWOP sentence being not void but voidable, in that the same sentence might be imposed on remand in a given case if the court the second time around properly followed the process. After all, the
Miller
majority said:
Our decision does not categorically bar a penalty for a class of offenders or type of crime — as, for example, we did
in
Roper
or
Graham.
Instead, it mandates only that a sentencer follow a certain process — considering an offender’s youth and attendant characteristics — before imposing a particular penalty.
Miller,
132 SCt at 2471.
As this Court explained in
von Thomas v. State,
293 Ga. 569 (748 SE2d 446) (2013):
Whether a sentence amounts to “punishment that the law does not allow” [rendering the sentence void] depends not upon the existence or validity of the factual or adjudicative predicates for the sentence, but whether the sentence imposed is one that legally follows from a finding of such factual or adjudicative predicates.
Id. at 571-572. Although claims that a sentence is void (i.e., illegal) are not subject to general waiver or procedural default rules, a defendant does forfeit a claim that his sentence was merely voidable (i.e., erroneous) if he does not raise the claim in timely and proper fashion. See id. at 573. See also
Tolbert v. Toole,
296 Ga. 357, 361, n. 8 (767 SE2d 24) (2014) (explaining that “Georgia’s customary procedural default rule, which holds that claims not raised at trial and enumerated on appeal are waived, does not apply to a claim that a criminal conviction or sentence was void on jurisdictional or other grounds,” although such claims may be subject to other procedural limitations);
Nazario v. State,
293 Ga. 480, 485-486 (746 SE2d 109) (2013) (explaining that void conviction and void sentence claims may be considered for the first time on direct appeal and in other proper post-trial proceedings). Nor could Appellant excuse his failure to raise his
Miller
claim at or before his sentencing by asserting that
Miller
was new law for his case, see
Brinkley,
291 Ga. at 197, n. 1, because
Miller
was decided several months before his sentencing. Thus, as the trial court recognized, Appellant’s
Miller
claim appeared to be procedurally barred because it was raised too late under this Court’s procedural holdings in
Jones
and
Brinkley.
We might also have upheld the trial court’s alternative ruling on the merits of Appellant’s
Miller
claim. We have explained that Georgia’s murder sentencing scheme does not implicate the core holding of
Miller,
because “OCGA § 16-5-1 does not under any circumstance
mandate
life without parole but gives the sentencing court discretion over the sentence to be imposed after consideration of all the circumstances in a given case, including the age of the offender and the mitigating qualities that accompany youth.”
Bun v. State,
296
Ga. 549, 550-551 (769 SE2d 381) (2015) (emphasis in original). See also
Foster v. State,
294 Ga. 383, 387 (754 SE2d 33) (2014) (similarly rejecting a facial Eighth Amendment challenge to OCGA § 16-5-1 based on
Miller).
As for the trial court’s exercise of that discretion, although at the sentencing hearing the court did not explicitly reference Appellant’s age (which was just six months short of adulthood) in imposing the LWOP murder sentence, the court had heard considerable argument regarding that factor as well as other circumstances of Appellant and the case, and the court had also heard the evidence at trial; the court then explained in its order denying the motion for new trial that the life without parole “sentence was based upon the evidence in the case which included [Appellant’s] involvement in several savage and barbaric crimes and also included evidence of [Appellant’s] age.” In previous cases, this Court indicated that the sentencing court’s discretion under
Miller
was fairly broad, so long as the trial court considered the defendant’s youth. See
Jones,
296 Ga. at 667 (affirming an LWOP murder sentence against a
Miller
claim where the trial court “explained that it based its sentence on balancing Appellant’s youth against the ‘vicious, mean, violent behavior and the adult conduct that was engaged in,’ which included the murder of not one but two innocent bystanders”);
Bun,
296 Ga. at 551, n. 5 (suggesting that an as-applied
Miller
claim would have failed where “the trial court’s order and [the] sentencing transcript make clear that the trial court considered Bun’s youth and its accompanying attributes in making its sentencing decision and whatever the significance attributed to Bun’s youth, the trial court found it was outweighed by the severity of his crimes, his criminal history, and his lack of remorse”).
But then came
Montgomery.
(d)
Montgomery’s
principal holding — that
Miller
applies retroactively in state habeas corpus proceedings — is irrelevant to this case, both because
Miller
was decided before Appellant was sentenced and because this case is here on direct appeal. Nevertheless, the explication
oí Miller by the
majority in
Montgomery
demonstrates that our previous understanding of
Miller
— and the trial court’s ruling on Appellant’s
Miller
claim — was wrong both as to the issue
of procedural default and as to which juvenile murderers a court actually has discretion to sentence to serve life without parole.
First, while
Montgomery
acknowledges that
“Miller’s,
holding has a procedural component,” it explains that the process discussed in
Miller
was really just a “procedure through which [a defendant] can show that he belongs to the [constitutionally] protected class.” 136 SCt at 734, 735. Put another way, although
Miller
did not outlaw LWOP sentences for the category of
all
juvenile murderers,
Montgomery
holds that
“Miller
announced a substantive rule of constitutional law” that “the sentence of life without parole is disproportionate for the
vast majority
of juvenile offenders,” with sentencing courts utilizing the process that
Miller
set forth to determine whether a particular defendant falls into this
almost-all
juvenile murderer category for which LWOP sentences are banned. Id. at 736 (emphasis added).
A hearing where “youth and its attendant characteristics” are considered as sentencing factors is necessary to separate those juveniles who may be sentenced to life without parole from those who may not. The hearing does not replace but rather gives effect to
Miller’s
substantive holding that life without parole is an excessive sentence for children whose crimes reflect transient immaturity.
Id. at 735 (citation omitted).
And a sentence imposed in violation of this
substantive
rule — that is, an LWOP sentence imposed on a juvenile who is not properly determined to be in the very small class of juveniles for whom such a sentence may be deemed constitutionally proportionate — “is not just erroneous but contrary to law and, as a result, void.”
Montgomery
at 731. It follows,
Montgomery
concludes, that state collateral review courts that are open to federal law claims must apply
Miller
retroactively if a petitioner challenges his sentence under the Eighth Amendment. See id. at 731-732. And it follows, as a matter of Georgia procedural law, that Appellant’s
Miller
claim — now understood to be a substantive claim that, if meritorious, would render his sentence void — could be properly raised in his amended motion for new trial and in this direct appeal, despite his failure to raise the claim before he was sentenced. See
Nazario,
293 Ga. at 487.
To the extent
Jones, Brinkley,
or any other Georgia appellate case holds otherwise, they are hereby disapproved.
The
Montgomery
majority’s characterization
oí Miller
also undermines this Court’s cases indicating that trial courts have significant discretion in deciding whether juvenile murderers should serve life sentences with or without the possibility of parole.
Miller
noted that, “given all we have said in
Roper, Graham,
and this decision about children’s diminished culpability and heightened capacity for change, we think appropriate occasions for sentencing juveniles to this harshest possible penalty will be
uncommon.” Miller,
132 SCt at 2469 (emphasis added).
Miller
also indicated that what was essential was that the sentencing court have the discretion to consider an offender’s “youth and its attendant characteristics, along with the nature of his crime,” in deciding whether a lesser sentence (like life with the possibility of parole) was more appropriate than an LWOP sentence. Id. at 2460.
The
Montgomery
majority explains, however, that by
uncommon,
Miller meant
exceptionally rare,
and that determining whether a juvenile falls into that exclusive realm turns not on the sentencing court’s consideration of his age and the qualities that accompany youth along with all of the other circumstances of the given case, but rather on a specific determination that he is
irreparably
corrupt.
Thus,
Montgomery
emphasizes that an LWOP sentence is permitted only in
“exceptional
circumstances,” for “the
rare
juvenile offender who exhibits such
irretrievable depravity
that rehabilitation is
impossible”',
for those
“rarest
of juvenile offenders .. . whose crimes reflect
permanent
incorrigibilityfor “those
rare
children whose crimes reflect
irreparable corruption”
■— and not, it is repeated twice, for “the vast majority of juvenile offenders.” 136 SCt at 733-736 (emphasis added). The Supreme Court has now made it clear that LWOP
sentences may be constitutionally imposed only on the worst-of-the-worst juvenile murderers, much like the Supreme Court has long directed that the death penalty may be imposed only on the worst-of-the-worst adult murderers. To the extent this Court’s decisions in
Jones
and
Bun
suggested otherwise, they are hereby disapproved.
Decided March 21, 2016.
Long D. Vo,
for appellant.
Paul L. Howard, Jr., District Attorney, Paige Reese Whitaker, Joshua D. Morrison, Assistant District Attorneys; Samuel S. Olens, Attorney General, Patricia B. Attaway Burton, Deputy Attorney General, Paula K. Smith, Senior Assistant Attorney General, Matthew Min-soo Youn, Assistant Attorney General,
for appellee.
In this case, the trial court appears generally to have considered Appellant’s age and perhaps some of its associated characteristics, along with the overall brutality of the crimes for which he was convicted, in sentencing him to serve LWOP for the murder of Charles Boyer — a crime for which Appellant may have been convicted only as an aider-and-abetter. The trial court did not, however, make any sort of distinct determination on the record that Appellant is irreparably corrupt or permanently incorrigible, as necessary to put him in the narrow class of juvenile murderers for whom an LWOP sentence is proportional under the Eighth Amendment as interpreted in
Miller
as refined by
Montgomery.
Whether such a determination may be made in this case is a matter that should be addressed in the first instance by the trial court on remand. Accordingly, we vacate the LWOP sentence imposed on Appellant for malice murder and remand the case for resentencing on that count in accordance with this opinion,
Miller,
and
Montgomery.
Judgment affirmed in part and vacated in part, and case remanded for resentencing.
All the Justices concur.