Sonic 2 (Game Gear/Master System) - Sky High Zone upgraded to SEGA Genesis sound chip.

[Seth Skoda]

https://www.newgrounds.com/audio/listen/936547

I added a little bit of extra stuff just to fill the sound space. Tons of MIDI editing done as well.

I used all Sonic 3 sound driver instruments here, but opted for 80s style drum samples because I thought they would sound better.

Edited May 25, 2020 by Seth Skoda
I just wanted to add something

[DarkSim]

Sounds pretty cool! While I was looking for the source on youtube, I found some pretty sweet remixes of this same source. One guy who remixed it in 2015 actually was hired to compose for Sonic Mania