Listen to Belly Up to the Bar, Boys online. Belly Up to the Bar, Boys is an English language song and is sung by Ed Begley and Jack Kruschen. Belly Up to the Bar, Boys, from the album The Unsinkable Molly Brown: Original Motion Picture Soundtrack (Deluxe Version), was released in the year 2016. The duration of the song is 0:54. Download English songs online from JioSaavn.