When & Where: 10 p.m., The Other Tent What They're Like: Sleigh Bells make electro-rock that's capable of pumping up dancefloors and pep rallies. Why They Matter: Singer Alexis Krauss and guitarist/producer Derek Miller broke out at CMJ 2009 with a couple dynamic performances and just a few songs on their MySpace page. Their music is pure, raw energy: Krauss's voice can switch from rowdy shouting to sweet singing within seconds, and Miller provides ravaged riffs (not far off from his metalcore past in Poison the Well) and pulsing electronic production. — Laura Leebove
Read the full list of acts to see at Bonnaroo over at emusic.