I have troubles finding physical CDs of most bands I listen to. For this reason, the one I probably have the most of is Nirvana and I have an almost ungodly amount of Nirvana stuff. Think all studio albums, With the lights out boxset, other official albums, storebought bootlegs and import releases etc. I've prob got somewhere between 10 and 20 CDs with Nirvana's name attached. I also have a few vinyls...