Listen to Mr Rhythm: When You Wish Upon a Star online. Mr Rhythm: When You Wish Upon a Star is an English language song and is sung by Al Cohn and Freddie Green. Mr Rhythm: When You Wish Upon a Star, from the album Four Classic Albums Plus (Cohn On the Saxophone / Mr Rhythm / The Jazz Workshop / A Mellow Bit of Rhythm) [Remastered], was released in the year 2012. The duration of the song is 2:38. Download English songs online from JioSaavn.