Help Katy Perry unlock a new song from "PRISM"!

We are getting SO CLOSE to Katy Perry's 2013 VMA performance -- can you feel it? Well, even if you can't literally feel Katy's upcoming VMA "Roar" performance, we've still been reading and listening to all sorts of Katy-related things this week! like, for example, song titles, lyrics, AND snippets from her upcoming PRISM album (out Oct. 22)!

Anyway, since you guys worked so hard to unlock those song lyrics using the hashtag #KatyNOW, we're gonna reward you with a little thing we like to call "Phase Two." NOW all you Katy Cats can select which PRISM song Katy will release early on Sept. 17 using one of two hashtags: #DARKHORSENOW or #WALKINGONAIRNOW.

Listen to samples of Katy Perry's "Dark Horse" and "Walking On Air" after the jump.

That's right, thanks to Pepsi and MTV, every last Katy Cat has the power to help Katy choose which brand-new single to release from PRISM! Get all the info and hear recently unlocked PRISM snippets on pepsi.mtv.com, and don't forget to watch Katy's debut "Roar" performance when the VMAs air this Sunday, Aug. 25 at 9 p.m. ET!

+ Listen to samples of Katy Perry's "Dark Horse" and "Walking On Air."

Cast your vote NOW for this year’s Video Music Award winners from the 2013 VMA Nominees. The 2013 Video Music Awards air Aug. 25 on MTV and VMA.MTV.com, live from Brooklyn's Barclays Center. No sleep till Brooklyn!

Photo credit: Capitol Records