Complex sentence: During his career as musician and composer, Mr. Andrew has had three platinum albums, two hit singles and his pieces, written before, during and after Janis Joplin's tenure, have been used in numerous major motion picture soundtracks and documentaries.
Split into simpler sentences: During his career as musician and composer, Mr. Andrew has had three platinum albums, two hit singles. His songs have been used in numerous major motion picture soundtracks and documentaries.