4
I'd recommend checking out "Debaser" - as this is a reasonable module that was never finished... a few people are using it - and it has a few decent features.
But, as I said, it was never properly finished.
It may give you a few ideas.
One feature I would strongly suggest, is for it to be able to link to other modules for either each artist - or each release - ie discussion (forum), articles (wf-sections/whatever) and so forth....