Clockwise from upper left: St. Vincent, Bruce Springsteen, Damien Jurado, Maria Linden of I Break Horses Courtesy of the artists hide caption

itoggle caption Courtesy of the artists

"Human expression is not confined to guitars." In his keynote address at SXSW Bruce Springsteen spoke of his love for pop of all flavors. Michael Buckner/Getty Images for SXSW hide caption

itoggle caption Michael Buckner/Getty Images for SXSW