Versions:
Carillon Editor V1.0
Carillon Editor V1.1
Carillon Editor V1.2

Player:
Carillon Player & FX Hammer V1.0 7645HZ Sample
Carillon Player & FX Hammer V1.0 No Sample
Carillon Player V1.0 (16K)
Carillon Player V1.0 (32K)
Carillon Player V1.2

Background:
Carillon Editor is a Music Engine for Game Boy & Game Boy Color. That runs natively on the GB. All original program code is by Alexsi Eeben.

Using:
It is recommended to run the editor on the actual Game Boy Color hardware only, but it's working on GB too.

Tutorial:
Carillon Editor V1.2 by Alexsi Eeben