Madonna
15 Images

Musicians on a mission

Madonna
Madonna (Spencer Weiner / LAT)
Justin Timberlake
Justin Timberlake (Marcel Antonisse / EPA)
Kanye West
Kanye West (Matt Dunham / AP)
Rihanna
Rihanna (RICHARD DREW / AP)
The Police: Andy Summers, Sting, Stewart Copeland
The Police: Andy Summers, Sting, Stewart Copeland (D. Ross Cameron / AP)
Kelly Clarkson
Kelly Clarkson (Peter Kramer / Getty Images)
Akon
Akon (Roger Kisby / Getty Images)
John Legend
John Legend (Evan Agostini / Getty Images)
Joss Stone
Joss Stone (Getty Images / Getty Images)
Al Gore and Melissa Etheridge
Al Gore and Melissa Etheridge (Myung J. Chun / LAT)
Beastie Boys: Adrock, MCA, and Mike D
Beastie Boys: Adrock, MCA, and Mike D (Guido Manuilo)
Red Hot Chili Peppers: Flea and John Frusciante
Red Hot Chili Peppers: Flea and John Frusciante (Kevin Winter / Getty Images)
Metallica’s Robert Trujillo
Metallica’s Robert Trujillo (Paul Hawthorne / Getty Images)
Spinal Tap: Harry Shearer, Christopher Guest, Michael McKean
Spinal Tap: Harry Shearer, Christopher Guest, Michael McKean (AP Photo / MGM Home Entertainment)
Smashing Pumpkins’ leader Billy Corgan
Smashing Pumpkins’ leader Billy Corgan (Victor Lerena)
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