Singer D'Angelo, left, performs with Wendy Melvoin, Maya Rudolph and Gretchen Lieberum at "The Music of Prince" tribute concert at Carnegie Hall on Thursday March 7, 2013 in New York. (

 

              Singer D
Singer D'Angelo, left, performs with Wendy Melvoin, Maya Rudolph and Gretchen Lieberum at "The Music of Prince" tribute concert at Carnegie Hall on Thursday March 7, 2013 in New York. (Photo by Evan Agostini/Invision/AP)