@Guy who posted about my post:
I know it's not true 8-bit, I should have said chiptune. But yeah, the ones you posted are awesome in-game, but I have no inclination to hear them outside of their respective games.
I guess it helps that Anamanaguchi were an established band before they did that soundtrack, and so they pull from more traditional influences.
"This grass feels funny. It feels like... pants." - Kirby
Also a song.