I managed to get the background music to a state where I am only going to do minor changes to it. Some people in the Amiga community might recognize the melody :D

I took existing drum, saxophone and percussion samples and recorded the bass, rhythm and solo guitars from my own instruments.  I still got a lot to learn, the samples took way more memory than I expected, the tuning changed after importing into Protracker and I just generally had to make a lot of compromises to make sure the MOD will fit in the available chip memory. I guess this will get better in future projects, this has to do until the submission deadline this weekend.