Listen to Once There Was 1,000 Legs online. Once There Was 1,000 Legs is an English language song and is sung by U.S. Army Special Forces. Once There Was 1,000 Legs, from the album Workout to the Running Cadences U.S. Army Special Forces Green Beret, was released in the year 1990. The duration of the song is 1:13. Download English songs online from JioSaavn.