Jonathan Groff.
Glee is happiness.
They sing sang light up the world in the new yore episode.
the whole glee cast
The Jonas Brothers!
Lea Michele, or Rachel Berry from Glee, sang "America the Beautiful" at Super Bowl XLV.
An unknown guest star. The Characters Rachel and Finn
Rachel sang Take a Bow in the second episode of Glee
Too many.
Blackbird, by the Beetles, glee version is better though ;)
The power of maddonna
the actress playing Rachel Barry Finn was the backround guy voice then the rest of the Glee Club sang backround ♥
They sang it on the episode called On My Way