I was just going to recomment that! I've been listening to those soundtracks lately, and It's awesome how different they are from each other. SoR1 has a 80's

I was just going to recomment that! I've been listening to those soundtracks lately, and It's awesome how different they are from each other. SoR1 has a 80's vibe and is the most "normal". SOR2 is arguably the best, where Koshiro started to explore new grounds. "Go Straight" is a classic, "Jungle base" shows some jungly house and, my favourite, "Alien Power" just evokes weirdness. Also, "Expander" sounds like a preview of the SOR3soundtrack. In SOR3 Koshiro worked with a partner, and developed a system that uses procedurally generated samples. It sounds a bit more harsh, with some break beats and bit more noisy. While not so pleasing to the ear sometimes, it is features some really interesting composition. I recommend "Fuze", "Cycle I", "Inga Rasen" and the stressful "Bulldozer". Also by Yuzo Koshiro, check out out Revenge of the Shinobi. For more FM synthesis goodness, try Thunderforce III in op's link.