I've never actually seen anybody call Jenny Lewis a carpetbagger. Too late now: The Las Vegas-born Rilo Kiley leading lady heads off such criticisms at the pass on "Carpetbaggers", a Jonathan Rice-penned country rocker from last year's Acid Tongue. In this clip from Sundance show "Spectacle: Elvis Costello With...", Lewis joins Costello himself, plus She & Him's Zooey Deschanel, for a solid performance of the caustic but upbeat tune. Then Costello, Lewis, and the band (sans one of two drummers) stick around to romp through the B-side, Momofuku's Costello-fronted "Go Away". "Last canister rolling/ On our little melodrama," Costello shouts. Not really, though: Diana Krall and Elton John are scheduled to be on the show Feb. 18. (via Stereogum)[Acid Tongue is out now on WEA/Reprise; Momofuku is out now on Lost Highway]