Metalcore might be a newer breed of metal, but it's still as heavy as music gets.
This week we asked Ultimate Guitar readers to nominate and vote for the best metalcore bands of all time.
The resulting list could make your ears sign a petition to turn the volume down, so crank it up and enjoy!
10. All That Remains
In the pre-"Overcome" era, All That Remains were a defining early metalcore act. The lineup has changed somewhat since then, but vocalist Philip Labonte and guitarist Oli Herbert remain.
Fans were devastated when Atreyu split in 2011 after twelve years together. But fear not: they've strongly hinted over the past year they're writing new music "for your ears to bleed to," so all is not lost.
Unearth took everything they loved about Pantera, Slayer, Metallica and Earth Crisis, then smashed it into something perfectly cast for the new generation of metalcore.
7. Times Of Grace
Members of Killswitch Engage (who feature high in this list, as you're about to find out) formed this band when guitarist Adam Dutkiewicz injured his back and wrote a new set of material in hospital. After some time, it took on a life of its own.
6. As I Lay Dying
What started as a two-piece in 2000, fronted by a then-skinny Tim Lambesis, flew on an upward trajectory and could have been absolutely huge. Problem is, Lambesis was arrested last year for hiring a hit man to kill his wife. Eek.
5. Parkway Drive
The Australian quintet supported many bigger names, such as the aforementioned As I Lay Dying, and quickly cast themselves as a key figure in the metal core scene. They're still going, and have even released a book about their first 10 years together.
4. August Burns Red
A self-proclaimed Christian Metalcore band. These guys formed before they were even out of high school, and are on their third vocalist with Jake Luhrs who joined in 2006.
3. Avenged Sevenfold
So the famous A7X have crossed over into traditional metal now (and if we remember rightly, now lack the modesty not to call themselves the next Metallica), but in their younger days they were pure metal core. It's great that they can explore new sounds, and they're certainly a forced to be reckoned with - even without their prominent founding member "The Rev" who sadly died in 2009.
Another act who started out more metal core, but have simmered into something quite distinct. They're true riff masters, as demonstrated with aplomb on their new album "Vengeance Falls."
1. Killswitch Engage
You voted in your thousands, and the official results are in: Killswitch Engage are the greatest metalcore band of all time!
Formed in 1999 from the ashes of Overcast and Aftershock, Killswitch Engage are commonly cited as one of the founders of the metal core genre. By 2007 they went as far as being nominated for a Grammy, and despite some substantial lineup changes in their time, they're still going strong. Congratulations!
That's the end of our top 10 metalcore bands of all time. Who's your favorite, and how would you tweak the results? Let us know in the comments.