There are subtle differences between the bands on this triple-bill, meat cleaver-to-the-head extravaganza. But for the most part, it's the meeting of like-minded head-bangers, led by Ancalagon. You won't just need ear plugs here. It's a heads-up game on the dance floor, too.

Ancalagon, Inhumatus, and Sulaco play on Friday, December 28, 9 p.m. at Bug Jar, 219 Monroe Avenue. $8; ages 21 and over. 454-2966. bugjar.com; facebook.com/ancalagonrochester.