This is a soon-to-be complete set of soundtrack lists from the Sonic games, including unused/beta tracks. I would like to add, for fun, a list of remixes in the future. A huge thanks goes to WB for sharing his huge music collection with me! :D
Old School
• Sonic the Hedgehog 1 (Genesis)• Sonic the Hedgehog 2 (Genesis)
• Sonic the Hedgehog 1 (Game Gear)
• Sonic the Hedgehog 2 (Game Gear)
• Sonic Spinball (Genesis + Game Gear)
• Sonic Chaos (Sonic & Tails)
• Sonic CD
• Sonic Boom
• Sonic 3 & Knuckles
• Sonic 3 & Knuckles Remix
• Sonic Drift
• Sonic Triple Trouble (Sonic & Tails 2)
• Knuckles Chaotix
• Sonic Drift 2
• Tails Skypatrol
• Tails' Adventure
• Sonic Labyrinth
• Sonic 3D Blast
• Sonic Championship (Sonic the Fighters)
• Sonic Jam
• Sonic R
• Sonic Blast
• Virtual Sonic
• Sonic Team Power Play
New School
• Sonic Adventure• Sonic Adventure: Songs With Attitude Vocal Mini-Album
• Sonic Adventure Vocal Remix
• Sonic Pocket Adventure
• Sonic Shuffle
• Sonic Adventure 2
• Sonic 10th Anniversary Special
• Sonic Adventure 2: Cuts Unleashed (Vocal)
• Sonic Adventure 2: Battle
• Sonic Mega Collection
• Sonic Advance 1
• Sonic Advance 2
• Sonic Advance 3
• Sonic Pinball Party
• Sonic Heroes
• Sonic Heroes: Triple Threat (Vocal Trax)
• Sonic Battle