1. Chris Brown
2. Phish
3. The Grateful Dead
4. Beyoncé
5. Jimmy Buffett
6. The Flaming Lips
7. Dave Matthews Band
8. One Direction
9. Kanye West
10. KISS
11. Lady Gaga
12. Bob Dylan
13. Pearl Jam
Photo of Grateful Dead fans by AP.
1. Chris Brown
2. Phish
3. The Grateful Dead
4. Beyoncé
5. Jimmy Buffett
6. The Flaming Lips
7. Dave Matthews Band
8. One Direction
9. Kanye West
10. KISS
11. Lady Gaga
12. Bob Dylan
13. Pearl Jam
Photo of Grateful Dead fans by AP.