On The Smiths, I know many people my age who solely found them out because of 500 Days of Summer, quite depressing. Even without that though, they're still immensely popular.
It was an Arcade Fire shirt when he was on SSN.
I notice his horse is named after an Arctic Monkey's track as well, My Propeller.
Ah yeah, that was it. Surprisingly quality music taste.
I'm not going to put too much emotion into this until he really leaves. Like most have said, Barton is replaceable and getting relatively old for a winger. I still appreciate what he's done and want him here, but this is the least of my concerns at the moment.