The theme (or one of them), composed by Reg Powell and adapted by Michael Wetherwax, from Beach Babes 2: Cave Girl Island, the sequel to Beach Babes from Beyond. Released by Torchlight Entertainment (who also released the original), the film was made in 1994, but due to the DTV Market loosing interest in the erotic genre, it was held back until 1998 and it's only real premire was on Cinemax. The movie is okay, but not as good as the first one. The first one contained cameoes by celebrity siblings, as well as Burt Ward, but that's all missing from this one. Sarah Bellomo (who played Xena in both Parts 1 & 2) gets that part. Her claim to fame is as Porn Star Roxanne Blaze :D. My only thing against this is the recasting of the roles of Luna & Sola. Why that happened may be a mystery forever. The movie is available on DVD, but the disc is also the R-Rated Cut. The Uncut version, which I own :D, is on an OOP VHS released by Full Moon Offshoot, Cult Video. As for this song, it's also heard in the first one. Enjoy :D
Disclaimer: I own nothing!
UPDATE: Due to constant comments on this vid from no one but pornbots, comments have been disabled.