What makes it good instead of just interesting is the use of distortion, vacuum cleaning, fuzz/space, and exploratory “free rock” to open up and connect.
The fourth studio effort, the first time the band were able to spend more than a couple of days on an album, which may account for the more polished sound.
Phoenix is where Grand Funk began to lose the way. There are some worthwhile moments, but the songwriting feels uninspired and the playing is lethargic.
Recommended if you find clip art superimposed on out-of-context stuff funny, and like to almost pee yourself laughing at stuff that makes absolutely no sense.