get the Sonic 3 AIR mod here:

https://gamebanana.com/sounds/58053

Ball & Chain... for Sky Sanctuary Zone (S3 Styled S1 Boss)

Sonic The Hedgehog 2 - Metropolis [Present Remix]

Sonic art by Kieran Gates?, with colour tweaks by me.
Splash Hill tileset by Okamikurainya: https://www.deviantart.com/okamikurainya/art/Splash-Hill-Zone-Genesis-657772884
What's a β-mix?:
It's just remix with a different name

I love me some Sonic 4

Full mockup:
https://imgur.com/gallery/X5sIZqE

Splash Hill Act 3 - β-mix

STUPID FUCKING CRAB KILL THIS CRAB I HATE THIS CRAB i love bubble crap!

MEGA MAN X2 - Bubble Crab (fakebit arr.)

Starlight Sleigh Ride [Instrumental]

sonic - you can do anything.fm

9. Sonic Spinball - Bonus Round

Note: I am using the JP release date since this is the JP soundtrack.
Note 2: The past tracks are not included because they will be in the US  OST which I will release later (but not soon)

Sonic CD Japan

Zone Clear JP

Mario & Sonic Sochi: Sonic Tracks - S09 Flying Battery Zone: Sonic & Knuckles

Flying Battery Zone (Sonic & Knuckles)

Tee Lopes - Mystic Cave Zone (Official Sonic The Hedgehog 2 HD - Alpha Release).mp3

VGM : https://drive.google.com/file/d/108G3nvJMKpt25Fx3hkpm5QaDbSOolKgJ/view?usp=sharing

Splash Hill Act 3 - β-mix

Twilight