Harold Arlen is a 1900s recording artist who has made significant contributions to the music industry. Notable releases in Harold Arlen's catalog include The Wizard of Oz, The Wizard of Oz in Concert: Dreams Come True, Over the Rainbow: The Music of Harold Arlen, The Best of Harold Arlen, among others. These projects have helped establish their reputation and showcase the depth of their musical abilities. With a dedicated following and a growing body of work, Harold Arlen remains an influential figure in their musical sphere.