Complex sentence: Not all ork-pop artists turned to Wilson and "Smile" collaborator Van Dyke Parks for inspiration; ork-pop acts were also influenced by Bacharach, Phil Spector, and by each other.
Split into simpler sentences: Not all ork-pop artists turned to Wilson and "Smile" collaborator Van Dyke Parks for inspiration. In addition to Bacharach and Phil Spector, ork-pop acts were often influenced by each other.