I still want to maintain that he was influenced by the likes of Pink Floyd and XTC and 70s psych rock broadly, too. although that's probably just similar influences leading to similar outcomes in both groups of artists :P.
- Compare to End of Time theme.http://www.youtube.com/watch?v=t9m8-EUFi-E
Compare to... most of his boat themes or the Termina theme.http://www.youtube.com/watch?v=4gmic1UVGIY
Compare to the battle theme from Gaea's Navel in CC (I think it was called Optimism).
And then the forest theme from CT's bassline is REALLY similar to the bass on Hey You. I guess not really SPECIFIC bands or song per se but there's this really specific bass style and set of instrumentation you'd get in 70s folk/psych rock -- I think it probably came out of the Beatles? -- but that's what I'm hearing there.
Also find a very marked... Latin American influence on his music, too. Magus' battle theme had this really mariachi thing going on, Chrono Cross delved into tropicalia in a few places, the first lavos battle theme is like Mexico colliding into Poland in some deliciously Devotchka-esque fashion, but then the second theme is back to the Pink Floyd/Doors synth riffage.
And then Robo's theme is pretty much Never Gonna Give You Up. Out of nowhere. Because why not?
His music's sort of all over the place which is part of the reason why I love it. It's not just a case of varying up styles -- pretty much any composer's going to do that -- but the extant and rapidity that Mitsuda bounces around IS pretty unique.