New Music? Here is New Stuff From Katy Perry and Christina Aguilera [VIDEO]

A new Katy Perry song called "Walking on Air" is now available for purchase on iTunes. It's $1.29, but iTunes also has a free sample. The song is off Katy's upcoming album, "Prism", which comes out October 22nd.
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A new Christina Aguilera track called "We Remain" has leaked online. The song is on the upcoming "Hunger Games: Catching Fire" soundtrack, which hits stores on November 19th.
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