Katy single record

SO THAT'S WHY THEY NEED THE GOLD TRUCK: If you had an inkling that Katy Perry's "Roar" was going to be kind of a big deal, you were not wrong. The Pop diva's new Capitol single, which dropped yesterday, could well have the single biggest debut and sales week of 2013. Our sales geeks have her challenging and possibly besting Robin Thicke's biggest week (424k), and almost certainly surpassing One Direction's 322k first week, which is the year's biggest debut so far. Stay tuned for updates all week. (8/13p)