All the same musicians, don't see why they can't sample their own stuff, from the same game series, in a game that features an absurd amount of unique tracks for a GBA game.
Nothing to do with Sonic but I thought this was funny:
That cancelled angst game Nobou was composing for
https://www.youtube.com/watch?v=mBR3CcJslC4#t=82
KC and Jojo
https://www.youtube.com/watch?v=yocxPScqe_k#t=38
Was only like 10 seconds but I heard it immediately and it stuck