Listen to Show Boat: Ol' Man River online. Show Boat: Ol' Man River is an English language song and is sung by Oscar Natzka and New Zealand National Orchestra. Show Boat: Ol' Man River, from the album The Definitive Collection, Volume One - 1938 - 1940, was released in the year 2016. The duration of the song is 4:48. Download English songs online from JioSaavn.