Glee season 5 episode 4 will be returning tonight after a brief hiatus following the tearful tribute to actor Cory Monteith last month.

Tonight's new episode is called "A Katy or a Gaga" and will show New Directions determining whether they are more like Katy Perry or Lady Gaga. Performance of Katy Perry's "Wide Awake" and Lady Gaga's "Applause" are in place.

American Idol star Adam Lambert will be tonight's special celebrity guest star as Elliott "Starchild" Gilbert.

The full episodes of Glee season five can be watched online on Fox, including "The Quarterback," the tribute to Cory Monteith where the New Directions remember Finn. Monteith's character Finn Hudson had to be written out of the show following his death, and the memorial episode showed the loss of his character with on and off-screen girlfriend Lea Michele (Rachel).

Monteith, 31, tragically died on July 13, 2013, after a toxic combination of heroin and alcohol.

Creator Ryan Murphy told reporters: "[The episode] was very difficult to shoot. Those actors and the crew really loved Cory. They loved Cory...He was the most kind, the most generous, never a bad word for anybody. so I think what you will see in the episode is what really happened. Almost everything in that episode is from the first take of every performance. The actors and crew had a really hard time shooting it. I've never seen a crew where you can't continue shooting it because they left the room sobbing. It was very hard. I struggled working on it because what you're seeing is not just what people felt about Finn but Cory."

He continued, "When you write something like that there's no right way to do it. A lot of the actors contacted me and said, 'I loved him so much can I please be a part of it,' so we put them in. It was very rough. It was very rough with Lea [Michele], but I was very proud of it."

"Glee" revolves around the William McKinley High School glee club, New Directions.