Britney's kinkiest and trippiest single since "Toxic," if not ever, becomes a trash-disco Yalta. Co-writer Ke$ha drawls over the slowed-down sleaze-bot groove. But Minaj makes it a keeper; she sneers, "I ain't talking poultry when I say this chicken's friiiiied," as synthesized fowl cluck along, summing up this remix's wild humor.

Listen to Britney Spears feat. Nicki Minaj and Ke$ha, "Till the World Ends (The Femme Fatale Remix)":

Britney Spears' Life in Photos: Her Rise, Fall and Comeback

“(We're Not) The Jet Set”

George Jones and Tammy Wynette were still married when they recorded the tongue-in-cheek "(We're Not) The Jet Set." The lyrics, written by Nashville songwriter Bobby Braddock, who also penned Wynette's "D-I-V-O-R-C-E" and Jones' "He Stopped Loving Her Today," make fun of the good life by declaring, "We're not the Jet Set/We're the old Chevrolet set." Braddock recalled that while writing the song, he needed the name of a city that evened out the rhyme he had with "Riviera" and "Missourah." “I got out a Rand McNally atlas," he said. "In the first part are the maps. The last part is an alphabetical listing of cities. I wanted a rustic, small-time sound. I went to the listing for Missouri. And I found 'Festus.' I loved the sound of it."