I warned you about Master Of Puppets and Citizen Kane, I'm going to do it be careful!
...that guy did it with Dark Side Of The Moon and guess what...it worked too!
While it may sound somewhat poetic and psychedelically cool that Sam Raimi edited his movie on top of Atom Heart Mother and/or Dark Side Of The Moon, it *IS* highly, highly unlikely. Notice that it concerns a few portions of the film, as mentioned on his atom heart oz page, almost like someone who *wanted* to find those similarities... Anyway, I'm not debating that the music fits, somehow, because it's possible, but that it was made on purpose? I don't buy it for one second.
For the Oz sequel I would suggest Wish You Were Here then...