Best Voice: Alabama Shakes
Alabama Shakes leader Brittany Howard sounded like she could fill up the entire festival grounds just with her voice and her guitar. Plus, she knows how to rock a cape. The quintet (plus three backup singers) debuted material from Alabama Shakes' upcoming album, Sound & Color. When Howard lost herself in a song, she closed her eyes, threw her head back, and unleashed her unique yowl. "See, I do not love you," she said, with so much passion that everybody knew it had to be a lie, and as the song built musically, she progressed to "I can't make you stay."