Who sang the Copacabana song in the bar scene? (SPOILERS)

(SPOILERS)
During the bar scene where Wren and Eric are tricking the rat faced guy before they steal his money, does anyone know who the woman singer was that sang the "Copacabana" song? For some odd reason, she is not listed in the credits.

"Wherever You Go, There You Are." - Buckaroo Banzai