She sings Firework in season 2 episode 12. ;)
they sing that in original songs for regionals
the glee version is also available on iTunes
Kurt and Blaine sang Candles in the sixteenth episode of season two titled Original Song.
The Glee Episode In Which Finn Happens To Sing Jesse's Girl To Rachel Is Laryngitis
They sang it on the episode called On My Way
Episode 4
They are doing "Sing" in Season 2 Episode 13-Comeback
Prom queen
Every single episode. That is somewhat of a stupid question. He is in the glee club. He must sing. lolz. :)
The Glee Episode In Which Finn Happens To Sing Jesse's Girl To Rachel Is Laryngitis
They sang it on the episode called On My Way
Episode 4
no
Special Education
Dream On.
like every...
episode 3 "Acafellas"
Season 2 Episode 15: "Sexy"
They are doing "Sing" in Season 2 Episode 13-Comeback
In the power of Madonna episode