Glee is back! After a month away, the show returned on November 7 for a Katy Perry vs. Lady Gaga musical smackdown extravaganza. And yes, it was well worth the wait. Miss out on any of the great performances from Season 5, Episode 4: “A Katy or a Gaga” — or just love them so much that you want to watch them all over again? No worries. We've got you covered. All four of the night's songs are below. Katy or Gaga, we bet you'll love them all.