The music that makes one of us emotional doesn't always make sense to others. William Lovelace/Getty Images hide caption

itoggle caption William Lovelace/Getty Images

Clockwise from upper left: Bright Eyes, Ed Sheeran, Louis Armstrong, Etta James, Peter Gabriel Courtesy of the artists hide caption

itoggle caption Courtesy of the artists

Singer-songwriter Yusuf (formerly known as Cat Stevens) Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Wayne Coyne of The Flaming Lips speaks to NPR's Arun Rath about his band's new album, With A Little Help From My Fwends. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

The Beatles' "Hey Jude" concludes with one of pop music's most epic fade-outs. Vimeo hide caption

itoggle caption Vimeo
Jonathan Blair/Corbis

Ed Sullivan smiles while standing with The Beatles on the set of his variety show on Feb. 9, 1964. Express Newspapers/Getty Images hide caption

itoggle caption Express Newspapers/Getty Images