Undertale & Deltarune by Toby Fox
Sonic the Hedgehog © SEGA

23- Credits Medley

Megalovania, Deltarune by Toby Fox
Rock my Emotions by Kitsune^²
Sonic the Hedgehog © SEGA

16- Dr. Robotnik's Rage (True Final Boss)

Megalo Strike Back by Toby Fox
Sonic the Hedgehog © SEGA

15- Final Boss

Deltarune by Toby Fox
Sonic the Hedgehog © SEGA

12- Card Castle Zone Act 2

11- Card Castle Zone Act 1

6- Redwoods Zone Act 2

5- Redwoods Zone Act 1

4- Fuchsia Field Zone Act 2

3- Fuchsia Field Zone Act 1

2- Options

Official soundtrack for the Deltarune in Sonic 1 concept.
Still up in the air whether or not a ROM Hack will be made from this.

Concept by junnboi
Deltarune by Toby Fox
Sonic, Tails & Knuckles © SEGA

Popular tracks tagged #sonic 1 light and dark