Masters of Sex - Season 4, Episode 4: Soundtracks

The party piano player plays the tune on the piano during Nancy and Art swingers party several times.

Betty and Guy sings show tunes after everyone pairs off.

Bill talks Baxter for a walk; Cleo leaves Tom her number as leaves him; Guy takes an office call for Betty; Nancy and Randy party ways the next morning; Art returns Virginia's car keys to her and apologizes for taking them; Virginia notices Betty coat as leaves and takes it with her; Bill talks with Baxter about changing his ways; Virginia finds Bill at Betty's, she returns Betty's closet then confesses to him that she and Dan aren't married.