Today's requests will be the last three requests, or at least the last three standard requests. Let's begin by wrapping up Sky Sanctuary and the Doppelganger Races in general.
I discovered some pretty hefty shortcuts going through the main stage, but I've discovered a few more since...though you can see I'm still working on the execution of them. And maybe discovering even more later.
The song here plays in Angel Island Act 1, the first stage of Sonic 3. The music continues unchanged even after Eggman burns down the jungle.