[Sonic] Marble Zone Act 1 (Box Robot Modern Mix)

https://www.youtube.com/watch?v=zLI9SEdnLO8

[Sonic] Star Light Zone (Tee Lopes Remix)

https://www.youtube.com/watch?v=W5g3reFjwU0

[Sonic.exe] Hill Act 1 (Jasper Valentine Cover)

https://youtu.be/f2cEFXgwqdI?t=1m12s

[Sonic Adventure] Chaos Nightmares (Open Your Heart)

https://www.youtube.com/watch?v=GgHPFDvSt-Y

[Sonic & Knuckles] Lava Reef Zone (Box Robot Modern Mix)

https://www.youtube.com/watch?v=OGu7RGUKWwQ

[Undertale x Sonic Heroes] Mystic Megalovania (Mystic Mansion x Megalovania)

https://www.youtube.com/watch?v=NdyNfTL6FTg

[Sonic 3] Final Boss (RichaadEB Metal Cover)

https://www.youtube.com/watch?v=dqbialsaliM

[Sonic & Knuckles] Doomsday Zone (GaMetal Cover)

https://www.youtube.com/watch?v=ZRK_Zrm938U

[Sonic Riders] Babylon Garden (SiIvaGunner High-Quality Rip)

https://www.youtube.com/watch?v=12OXuN9GTbw

Video Game Music Archive

Which one is your favorite?