Use Navigation controller.

Add custom view for each table cell type too.
List out Albums, Artists, Songs.
I don't quite remember where I got with this.

I think a view for the albums, but not a view for albums of a particular
artist (though I think I put the infrastructure part on the model
there..)
Support navigating to albums by artist.

Still needs to auto-nav to the album if it's the only album available.