If you are talking about the pilot, I would say the song is called 'Shining Star' by Earth Wind and Fire.
The episode of Glee that featured a song by Ke$ha was 'Blame it on the Alcohol'.
Zara
No they just talked about it on one epesode briefly
The episode is called The Substitute. Gwyneth Paltrow was featured in that episode.
Yes. It was featured in Prom-asaurus, the nineteenth episode of Season Three.
It was featured in Pilot and Hairography, both by Finn and Rachel.
There is no episode on Glee that is named "You Do". However, there is an episode on Glee that is "I Do". S04E14
Rumour Has It/Someone Like You by Adele is a mash-up featured in Mash Off, the sixth episode of Season Three.
Lea Michele (Rachel) and Cory Monteith (Finn) sing a duet of No Air on Glee!
Zara
(I've Had) The Time of My Life by Bill Medley and Jennifer Warnes is featured in Special Education, the ninth episode of season two.
The song "Man in the Mirror" by Michael Jacksonwas featured in the 8th episode of the 3rd season of of the hit TV show Glee, "Hold on to Sixteen".It originally aired December 6, 2011.