LOS ANGELES - SEPTEMBER 4: Bassist John Paul Jones of the rock band 'Led Zeppelin' tunes his Fender bass backstage at the Forum on September 4, 1970 in Los Angeles, California. (Photo by Michael Ochs Archives/Getty Images)
American musician and comedian Weird Al Yankovic plays an accordion as he performs onstage at the Star Plaza Theater, Merrillville, Indiana, July 9, 2010. (Photo by Paul Natkin/Getty Images)