Not really knowing the game's history (although obv. there are a LOT of Amiga ports on the Genesis) that intro is such an Amiga thing, at least, an Amiga Demoscene thing. Tie in the instrument samples/playing to an animation cue on the screen, always loved that effect.
Everything else about it is pretty great, though. It's just a symptom of the format, later on I think it was updated with panning and such.
Maybe that's why I'm not so hot on SNES stuff. I love Amiga MOD tracker titles and also Genesis stuff, but the SNES is a middle-ground that doesn't sit right with me. Also, the kind of games it's music is best suited for never appealed to me like arcade games did.
It doesn't age that well, either. IMO SNES music tries to sound like something it's not, creating an aural "uncanny valley" of sorts, whereas the MD/Gen's best music works better as a "homage" to what it's trying to emulate.
^^^^ All heavily, HEAVILY opinion-based though, don't take any of it as fact
That's all good! I'm just happy we're getting to a point where people aren't needlessly writing off a particular system (usually the Genesis) and actually appreciating it's strengths without backhanded complements.