"The Blob" by The Five Blobs

from imdb:

The title song "The Blob" was co-written by Burt Bacharach and is on his album "Look of Love: the Burt Bacharach Collection." Paramount tapped Bacharach and Mack David (brother of Hal David) to come up with a non-threatening theme that would prevent the faint of heart from going into nostril-flaring terror during the opening credits. Together the two men concocted "The Blob," a goofy musical creature that is one part "Temptation" to two parts "Tequila." Session singer Bernie Nee does the champagne-cork-popping honors by pulling his finger out of his cheek seven times. Only Ralph Carmichael's score received a screen credit, giving credence to the notion that the song was a last-minute addition. The Five Blobs turned out to be a phantom group that consisted of Bacharach, a bunch of musicians for hire, and Nee, who tracked his voice five times to achieve that Boris Karloff-esque quality.