John Hollenbeck's Claudia Quintet performs at the 2012 Newport Jazz Festival. Erik Jacobs for NPR hide caption

itoggle caption Erik Jacobs for NPR

Kurt Elling. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Kurt Elling discusses his five favorite jazz vocalists on World Cafe. Christian Lantry/Courtesy of the artist hide caption

itoggle caption Christian Lantry/Courtesy of the artist

Jazz vocalist Kurt Elling takes the stage on Friday, Jan. 14, at World Cafe Live in Philadelphia. Courtesy of the artist hide caption

itoggle caption Courtesy of the artist

Kurt Elling performs with pianist Lawrence Hobgood at Dizzy's Club Coca-Cola at Frederick P. Rose Hall, home to Jazz at Lincoln Center. Frank Stewart/Jazz at Lincoln Center hide caption

itoggle caption Frank Stewart/Jazz at Lincoln Center