Complex sentence: It also featured photographic effects, which were imitative of LSD-induced hallucinations and was interspersed with inscrutable fantasy sequences, over a musical backdrop of improvisational jazz, blues rock of the band The Electric Flag, plus a short, jazz-influenced dramatic musical score.
Split into simpler sentences: It also featured photographic effects, which were imitative of LSD-induced hallucinations and inscrutable fantasy sequences. This played over a musical backdrop of improvisational jazz, blues rock of the band The Electric Flag, plus a short, jazz-influenced dramatic musical score.