Listen to If I Only Had a Brain online. If I Only Had a Brain is an English language song and is sung by Judy Garland, Ray Bolger and The Mgm Studio Orchestra. If I Only Had a Brain, from the album Two On One Musicals - the Wizard of Oz and the Sound of Music, was released in the year 2011. The duration of the song is 3:45. Download English songs online from JioSaavn.