Complex sentence: Steve Tayler Barrett the bands manager was an integral part of the creative as well as the business side of the band and his input included lyrics, song titles, song structures, styling, band personnel and creative ideas.
Split into simpler sentences: Steve Tayler Barrett, the band's manager, was an integral part of the creative as well as the business side of the band. His input included lyrics, song titles, song structures, styling, band personnel and creative ideas.