The Marx Brothers run amuck on a boat and in the world of opera when Otis B. Driftwood (Groucho Marx) meets aspiring singer Ricardo, who is determined to win the love of fellow performer Rosa.

Aided by Fiorello (Chico Marx) and Tomasso (Harpo Marx), Otis attempts to unite the young couple, but faces opposition from the preening star Lassparri, who also has his sights on Rosa.

It is impossible to explain why that is so funny; their sheer irreverence, exuberance and verbal comic genius are marvelous. Peter Bradshaw. Guardian

Guaranteed to have you giggling from one end of the musical scale to the other BBC.com

Screening as part of BFI Musicals! The Greatest Show on Screen, a UK-wide film season supported by National Lottery, BFI Film Audience Network and ICO. bfimusicals.co.uk