By comparison, the fight with the boss sounds so different, almost like a rave.
And that's one of the reasons it's one of the damned best boss themes in video game history. Hands down. SoM was my first taste of gamelan music, but not my last....
This still stands out as one of my favorite gamelan songs and only a sub-human could not like it:
Akira [Tr-4] Tetsuo