This file is downloaded from https://downloads.khinsider.com/game-soundtracks/album/sphere-knight-original-soundtrack-2017

Name: Sphere Knight ORIGINAL SOUNDTRACK

Year: 2017
Catalog Number: UNSR-0001
Platforms: iOS
Published by: unsound repair

Description: 

tracks 1-14 have enhanced audio 
tracks 15-20 use only SCC sound capabilities

Soundtrack CD containing the music from an IOS game by the same name. 

Composed by Yukio Nakajima, (also known for Energy Breaker, Chaos Seed, Lufia/Estpolis series, and several others) 
I found this CD because I am a fan of their work

This soundtrack is in the style of the MSX computer "SCC" sound chip

Sphere Knight 
(sometimes listed as one word "SphereKnight" ) is a digital only mobile game, originally released on iPhone/IOS by Pepper Bomb. also available on Google play by Hiroaki Saito

Any involvement of original staff with this CD release or where this CD was sold is a mystery to me, I can't find anything on "unsound repair" and this seems to be their only known release. 

It is a doujin (unofficial) CD due to having no publisher or distributor, likely sold at a convention such as Comiket

The only other soundtrack connected to Sphere Knight was a single arranged track of the main theme "Sphere Knight" included in Game Music Prayer IV

Published on site: 7th of January, 2026