Single Minded: Jay-Z Goes Disco, Katy Perry Gets Remixed, More

Jay-Z, "99 Problems" [Light Year Remix]

It's unlikely that Jay will opt for this disco re-structuring of this Black Album classic at his headlining slot at All Points West tonight but, hey, who knows? Remember that one time when My Bloody Valentine played that all-bluegrass set? That was weird.

Katy Perry, "Waking Up in Vegas" [Calvin Harris Remix]

OK, so the big problem with this Calvin Harris remix of

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