"Glee" was a T.V. show that aired on the Fox Network and ran for 6 seasons. It is about a group of high schoolers who come from various cliques and join the school's glee club and their various trials. The glee club is show choir and so there is, of course, lots of singing. These songs are mostly covers of songs from musicals and popular music. Below is a list of my top 5, I could honestly go on with favorites but I'll show only 5. I like these songs for the way they performed the song and just because I like them.
"Toxic" from "100"
Quinn, Britney, and Santana (Dianna Agron, Heather Morris, and Naya Rivera) cover Britney Spears
"Tightrope" from "Homecoming"
Jane (Samantha Ware) and The Warblers cover Janelle Monae
"Oops... I did it again" from "Britney 2.0"
Rachel (Lea Michele) covers Britney Spears
"Creep" from "Guilty Pleasure"
Rachel and Brody (Lea Michele and Dean Geyer) cover Radiohead
"Keep Me Hanging On" from "Throwdown"
Quinn (Dianna Agron) covers The Supremes
"Cold-Hearted" from "Feud"
Santana (Naya Rivera) covers Paula Abdul.