What is the music and who performs it in the Zodiac Club?

Pete Candoli, and Conte Candoli are mentioned in the cast list (The Brothers Candoli).
Haven't been able to find much info about albums...they did a lot of backup for other artists.
Good stuff, though, isn't it...maybe Columbia will come out with a soundtrack in the future...be
a nice accompanyment to all the "Bewitched" marketing that's gonna happen this summer.

The male singer (French) is Philippe Clay, b. 7 March 1927, Paris, France, and I made the initial error of guessing that he was Belgian singer/songwriter Jacques Brel, but my French friends set me straight about this. (Although they allowed that it was a good guess, for an American.) This is musical cabaret of the first water, a terrific support for the illusion that this is a magical place where anything can happen. These are demons here to entertain you, minstrels of the misbegotten, and the fevered pace of the instrumental flourishes, like the straining trumpets, lend a breathless feel to the atmosphere of the witch's club.

The song performed by Philippe Clay is Le noyé assassiné (The drowned assassinated one) and, as Mrs. dePasse explains, the poor soul never liked drinking water. :D