Complex sentence: In the early years of BT's career, he became a pioneering artist in the trance genre, this despite the fact that he doesn't consider himself a DJ, since he infrequently spins records and comes from an eclectic music background.
Split into simpler sentences: In the early years of BT's career, he became a pioneering artist in the trance genre. This despite the fact that he doesn't consider himself a DJ, since he infrequently spins records and comes from an eclectic music background.