Rob Hubbard. The guy who wrote the Commando hiscore music on the C64, which is playing in your (cool) game.
Oh, interesting. I got the music for the game off the GB Studio community assets page which were created for anyone using GB Studio to use for free. I credited the composer of the music in the game.
Edit: I just listened to it on YT and yeah, the track on the community assets page is a pretty much exact recreation of the commando track. Thanks for letting me know. I have been operating under the presumption that the gbstudio community assets were original compositions. They didnt credit Rob themselves... I guess it falls under a cover since it was remade as a .mod file but I am still embarrassed. I won't be using that track again and have credited him. Thanks.