Help identifying a 90s song: female “Oh-oh” intro + male rap

Hi! I’m looking for a 90s track I once heard in a demo mix tape (around 1997–1999). It starts with a female vocal singing something like “Oh-oh” in an energetic, upbeat way. Then a male rapper enters, faster than in T-Spoon’s “Sex on the Beach.”

The song played for about 2 minutes at the beginning of the mix. I’ve never heard the full version and I’ve been trying to find it ever since.

Any ideas?