Barnes & Noble TV Commercial, 'Duet' Featuring Lady Gaga, Tony Bennett

Lady Gaga walks into a Barnes & Noble store bundled up in a green coat and green heels. She begins to hum a song as she walks through the store, looking through the books on an aisle. On the other side of the shelves is Tony Bennett, who is humming to the tune of, "Baby, It's Cold Outside" as he looks at the books on the shelves while he walks. Eventually the two famous singers meet at the end of the shelf after hearing each other sing, embrace and finish the song in unison.