Literally just the different instruments in each song, but they cut out and come back in like a song, instead of in response to player input, like in the game

Link to vini64 https://www.youtube.com/channel/UCGuiKL6tFPxKtPI0zdGvXog

Super Mario Maker 2 Editor OST - SMB Forest (Mix by vini64)

Super Mario Maker 2 Editor OST - SMB Sky (Mix by vini64)

Dark Wasteland

Super Mario Maker 2 Editor OST - SMB Sky (Mix by vini64)

Chiptune Human