I have been a huge fan of the your game. bought it off of steam and have played it for quite a while. So because of that I have become accustomed to the games soundtrack. From what I understand and I could be completely wrong, which if I am then disregard this message, but isn't the Robin MorningWoods soundtrack like original work for the game? I ask because I recently played a Minecraft modpack called Medieval MC, and the main fight song of Robin is used in the modpack. Maybe you guys Gave the mod Author permission to use I don't really know but there isn't any kind of credit for it in the modpack. I just wanted to let you guys know if you weren't aware that's all. 

Hello EliasBram. All the soundtrack in the game is royalty-free music for which we have paid the rights of use. The sound tracks is not exclusive to our game and you can find them in other works like other video games or videos.