?uestlove and Captain Kirk Douglas of the Roots performed a cover of the current Number One song in the country, Pitbull's "Timber" (feat. Ke$ha), with a Simon and Garfunkel twist.
Bruce Springsteen joined Jimmy Fallon for a reworking of "Born to Run" with fresh lyrics about this week's Chris Christie debacle.
After the silliness, Springsteen brought out the E Street Band for "Heaven's Wall" and "High Hopes," the title track from his latest album, both featuring Rage Against the Machine guitarist Tom Morello.
Sharon Jones and the Dap-Kings played a pair of cuts from this week's Give the People What They Want on Conan.
Jennifer Nettles of Sugarland performed a track from her solo debut, That Girl, on Letterman.
And be on the lookout this weekend for Drake as both the host and musical guest on Saturday Night Live.