The John Glenn Singers

Studio group thrown together to record the space race themed novelty song "Please Mr. Kennedy." on February 18, 1961.

Llewyn Davis jumps at the chance to earn a little money singing and playing on it, but foolishly turns down royalties for a higher flat payment. His pal and fellow folkie Jim is also there.

From the 2013 film Inside Llewyn Davis.

The song they sing is a reworked version of real novelty song "Mr. Custer," sung by Larry Verne, which went to #1 in the United States in 1960.