Bonnie Raitt accepts her Lifetime Achievement Award at the Americana Music Awards in Nashville on Sept. 12, 2012. Susan Bibeau/Folk Alley hide caption

itoggle caption Susan Bibeau/Folk Alley

Bonnie Raitt's new album, Slipstream, comes out April 10. Matt Mindlin hide caption

itoggle caption Matt Mindlin

Muddy Waters pioneered Chicago's now-signature electric blues. Keystone/Getty Images hide caption

itoggle caption Keystone/Getty Images