Fox has released a new clip from the musical series featuring a mashup of the Adele songs 'Rumour Has It' and 'Someone Like You'.
The number will be performed by cast members Amber Riley and Naya Rivera as part of a competition on the forthcoming instalment titled 'Mash Off'.
Watch Amber Riley and Naya Rivera cover Adele's 'Rumour Has It' and 'Someone Like You' below:
The performance will mark the show's 300th musical number.
Glee's previous episode 'The First Time' saw two of the show's couples - Kurt and Blaine and Rachel and Finn - have sex for the first time.
Series creator Ryan Murphy described the episode as "exciting", admitting that he is thrilled to be involved in one of the first shows to depict a gay couple engaging in intercourse on US network television.
'Mash Off' airs in the US on Fox next Tuesday, November 15 at 8pm and in the UK on Sky One next Thursday, November 17 at 9pm.