Truly a work of art
This is simply an amazing arrangement of Sonic 1's Marble Zone. That stage has always been, by far, one of my least favorite stages and is the reason I hate all lava stages in all games so the music from that stage has never been on my high list of compositions that I'd wanna hear but this piano arrangement has made me love this theme for the first time. The fast, moving parts in :28 - :42 and again repeated & 1:09 - 1:23 were truly beautifully done. The balance between the calm and the fast moving parts is excellent. I'm in total awe at this piece. Well done.