Complex sentence: His music compositions have been used for movie themes as well as television, having performed the theme song to the internationally successful television show, "Baywatch Nights" where he was featured every week with David Hasselhoff.
Split into simpler sentences: His music compositions have been used for movie themes as well as television. He performed the theme song to the internationally successful television show "Baywatch Nights", on which he was featured every week with David Hasselhoff.