"Nothing to Lose"

From the "Nothing to Lose" Wikipedia entry:

The score of The Party was by Henry Mancini, including the song "Nothing to Lose." Mancini, commenting on audience reactions, noted, "That's what I get for writing a nice song for a comedy. Nobody's going to hear a note of it." During a scene later in the film, the band can be heard playing "It Had Better Be Tonight," which was a song Henry Mancini composed for the first Pink Panther film.

Hear a bit of "It Had Better Be Tonight" from The Pink Panther:
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Here is Claudine Longet performing a version of "Nothing to Lose":


And here, as Hrundi V. Bakshi (Peter Sellers) attempts to retrieve his white loafer from the fountain, the band plays an instrumental version: