@Blanchflower: I asume I was really lucky with the challenges. Because it seems for you even harder to do.
So you've completed piano and are working on drums? Than throw parties at locations in town untill you have completed all that challenge.
After that, start with bass and do the same thing.
Than hit the final instrument: gitar.
The whole thing is actually not that difficult if you think about it. The real challenge is having patient.
Besides that, you have Metro and me supporting you.
