I'm guessing you guys are talking about the 2nd boss fight music (2 bosses per world, one at world *-4 and one at *-8 ). For ease of reference, I'll call them Boss1 and Boss2. Boss1 music is catchy and lighthearted, and hard not to tap one's foot to. I can't imagine a way to remix it. Boss2 music is upbeat and frantic, and provides an excellent sense of tension and immersion. I always imagine it starting with the prelude music with Kamek, threatening Yoshi with a new super-sized monster; this tune would be a tease, lighthearded and harmless, making for a high-contrast transition with the boss fight music proper. This portion I always imagined being a heavy metal track, similar to Dead Batteries/Live at the Sandopolis, the synth/keyboard track being replaced with electric guitar.