Listen to Moon River (From "Breakfast at Tiffany's") online. Moon River (From "Breakfast at Tiffany's") is an English language song and is sung by John Williams, Henry Mancini, Christopher Gunning, Laurence Cottle, Ralph Salmins, Harold Fisher, Ian Thomas and Chris Laurence. Moon River (From "Breakfast at Tiffany's"), from the album John Williams Plays the Movies, was released in the year 2015. The duration of the song is 4:07. Download English songs online from JioSaavn.