Morricone's subsequent Giallo soundtracks would rely heavily on improvisational and experimental music. However, this one retains quite a bit of the easy vibe found on his late sixties romantic drama scores. It's not dissonance-free, about half the tracks are free-form spaz outs, but the variety helps to make this one the best Giallo scores ever. Even the oom-pa-pa number, "Sei Sei Stonato" is great.
L'Uccello Dalle Piume Di Cristallo