Listen to When the Saints Go Marchin' In online. When the Saints Go Marchin' In is an English language song and is sung by Ella Fitzgerald and Louis Armstrong. When the Saints Go Marchin' In, from the album Greatest Hits: Louis Armstrong & Ella Fitzgerald Vol. 2, was released in the year 2011. The duration of the song is 3:14. Download English songs online from JioSaavn.