It's official! Credited to Audissi Studio by Richard Jacques. Ripped from Spotify.
LETS GOOOO

Kingdom Valley Act 1 - Sonic X Shadow Generations OST

Space Colony Ark Sonic x Shadow Generations

<lalkowa3.mp3

Audio doesn't belong to me, obviously. Credit to sonickai on Youtube for the song length and upload quality.

Sonic Rush Adventure - Deep Core (Final Boss)

Mr. Unsmiley (Sky Rail) - Sonic Adventure 2 [OST]

Sky Rail: Mr. Unsmiley

COMPLETE TRINITY - SONIC HEROES Original Soundtrax

Egg Albatross

Hang Castle

Jungle Joyride: Day

Maximum Overdrive - Team Sonic Racing Original Soundtrack

[D3] 10. Team Sonic Racing OST - Haunted Castle: Lap Music

Super Smash Bros. Anthology - Vol. 13: Fire Emblem

06. Story 5 Meeting

Super Smash Bros. Anthology - Vol. 27: Street Fighter

01. Ryu Stage

This account is for official Sonic music. Make sure to look at the albums for official games and playlists for official and unofficial compilations. All music here belongs to their respective owners.

All album and playlist links are broken, will be fixed as soon as possible

Jungle Joyride: Day

Sonic’s Music Collection