Most of Fellini's films made after 8 1/2, with the exception of Amarcord, seem to get mostly unenthusiastic reviews. Sure they are less structured, but to me that is not a negative trait at all. I think every film he made (still haven't seen La Voce Della Luna, not an affordable copy with English subtitles to be found) is great and the ones from his less popular period definitely get better the more I watch them.
Casanova was especially under-rated and one of his most dream-like films, even though they all were, which is certainly aided by Rota's haunting score, and I will admit that after Rota's death, the music in Fellini's films was not as strong. Though there are only a few melodies, re-done, on this album, it is no weakness. From the almost spooky Theme to the robotic rhythms to accompany Donald Sutherland's fully body lunge humping, this is a wonderfully atmospheric record I'm having a lot of trouble removing from the turntable.