LINKIN PARK haunt nearly any act mixing alt-rock, hip-hop and electronic music. While the band's manic syncopation lives on in Twenty One Pilots' mash-up of spitfire raps and electro-pop, their expansive synths serve as scaffolding for Bring Me the Horizon's epic metalcore. Another biggie is Hollywood Undead, whose vicious rap-rock harnesses the high-decibel stomp of LP's early nu-metal.