Image 1 of 9

Herbie Hancock wields a wicked keytar at his 70th birthday concert titled "Seven Decades -- The Birthday Celebration" at the Hollywood Bowl on Wednesday, Sept. 1, 2010.

Herbie Hancock concert

( Genaro Molina / Los Angeles Times )

Herbie Hancock wields a wicked keytar at his 70th birthday concert titled "Seven Decades -- The Birthday Celebration" at the Hollywood Bowl on Wednesday, Sept. 1, 2010.

PHOTOS: Herbie Hancock at the Hollywood Bowl

Herbie Hancock concert

The Grammys 2011