I don't have any music posters up on the walls, but I do have this one :
Aside from that, all the music posters I've had were Pink Floyd posters. A couple of The Wall posters, Momentary Lapse of Reason (beach full of beds) and Pulse, the one with the big metal heads facing eachother in the field.
It's not because I only worship Pink Floyd (although I admittedly do think they are brilliant), but I only ever got music posters on one occasion in my life I think and then it was those PF posters .. they're all torn and ugly or thrown away now.
Maybe I should get some new ones!