Complex sentence: He and Jimmy hit it off from the start and the film "San Francisco" which Alan produced with documentary director Anthony Stern featured an original soundtrack by PInk Floyd with a then Syd Barrett in full flow and performing his greatest work.
Split into simpler sentences: He and Jimmy hit it off from the start and the film "San Francisco" which Alan produced with documentary director Anthony Stern. The film featured an original soundtrack by PInk Floyd with a then Syd Barrett in full flow and performing his greatest work.