Singer and actor Matthew Morrison has revealed that the cast of 'Glee' are currently working on the Cory Monteith tribute episode, following the star's tragic death in July, and Lea Michele has been incredibly strong on the set.

Speaking to E! News, Morrison (who plays Mr. Schuester on the hit U.S. series) explained that it has been a tough project to shoot, but Monteith's on and off screen girlfriend has dealt with it all so well:

"We're in the middle of filming it, and it's incredibly hard. We've mourned Cory, but now we're mourning Finn. So it's kind of like two people in that one person. It's incredibly hard and we're staying strong together and I have to say Lea [Michele] has been the strongest of us all."

He added: "I think we all knew we were very close but I think this just kind of solidified it like we are a rock for each other right now. It's quite a beautiful thing."

Michele recently took to her official Twitter page and shared a snapshot of herself wearing a 'Finn' necklace (shown above left), after Monteith's character, and told her followers that they are filming the tribute episode.