Alicia Keys (Carlos Alvarez / Getty Images)
Bruce Springsteen (Evan Agostini / Associated Press)
Shakira (Evan Agostini / Associated Press)
Stevie Wonder (Mark Davis / Associated Press)
Mary J. Blige (Evan Agostini / Associated Press)
Taylor Swift (Mark Davis / Associated Press)
Christina Aguilera (Mark Davis / Associated Press)
Sting (Evan Agostini / EPA)
Beyonce (MJ Kim / Associated Press)
Madonna (Evan Agostini / Associated Press)
Dave Matthews, Neil Young (Mark Davis / Associated Press)
Wyclef Jean (Evan Agostini / Associated Press)
