Os Marretas

A holiday extravaganza features Lady Gaga singing tunes from her 2013 album, "ARTPOP," and performing with Kermit the Frog and other Muppet favorites. Also included are duets with Elton John, Joseph Gordon-Levitt and RuPaul; an appearance by Kristen Bell; and renditions of seasonal classics by the Swedish Chef, Beaker and Animal.