Listen to Who Am I - High key performance track w/ background vocals online. Who Am I - High key performance track w/ background vocals is an English language song and is sung by Ultimate Tracks. Who Am I - High key performance track w/ background vocals, from the album Ultimate Tracks - Who Am I - as made popular by Casting Crowns [Performance Track], was released in the year 2006. The duration of the song is 4:36. Download English songs online from JioSaavn.