Complex sentence: There are songs by other artists mentioned in the film, including Lionel Belasco, which are reflective of the character Seymour, and of director Terry Zwigoff himself, who is a collector of 78 RPM records, as portrayed by Seymour.
Split into simpler sentences: There are songs by other artists mentioned in the film, including Lionel Belasco, which are reflective of the character Seymour, and of director Terry Zwigoff. Zwigoff is a collector of 78 RPM records, as portrayed by Seymour.