@JimmyFromTheBay

I read that most of these games are ported from MSX.
The story goes that in order to make porting easier the SGM module has a Yamaha music chip that is the same as used in MSX.

So why not run the original game on MSX ?

@SpudsMcToole
Just out of curiosity, which es_systems.cfg do you edit?

I always copy the original to /opt/retropie/configs/all/emulationstation and edit it there where it won't get reverted when running updates. Only thing is it also has to be manually updated/synced if additional systems are added as they won't show on the system list if not listed in the customized es_systems.cfg (I'll normally copy-paste from the original file to the copy once the new system is installed). It just saves some of the headache for the future if you have a custom system order you like and don't want to redo it after updating.