Mixology master Gregg Gillis is like a DJ guardian angel of the pop spheres, beaming his remixes from some cloud where Fat Joe and Spacehog are partying down together for all eternity. In his latest album-length sound clash (released via free download on his Illegal Art website), he serves up Foxy Brown over Peter Gabriel, M.O.P. over Miley Cyrus, Big Boi over Portishead, even Ke$ha chanting "Police shut us down!" over a Grand Funk Railroad drum solo. But he always finds weird new emotional nuances in the samples — like when he lays B.o.B's taunting "Haterz Everywhere" over the warm, pretty piano outro from "Layla."

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“1999”

“I don’t consider myself a great poet,” Prince told Rolling Stone. “I just know I’m here to say what’s on my mind.” In the case of the apocalyptic party anthem “1999,” he was worried about then-president Ronald Reagan’s foreign policies. The song’s melody is based on a riff borrowed from the Mamas and Papas’ “Monday, Monday,” and Prince originally envisioned the first verse with three-part harmony but later split the vocals between himself and members of the Revolution. Because Warner Bros., with whom Prince was locked in a contractual battle, owned the original’s masters, Prince rerecorded the song and appropriately released that version in 1999.