The cast of Glee pays tribute to Cory Montieth in this scene. They are singing a song from Rent.
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This is the poster for "The Quarterback." It's a special episode of Glee in which the series says goodbye to Cory Monteith and Finn.
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Glee Season 5 Episode 3 Quotes

He was the first cool kid to be nice to any of us, and he was our leader in here. We love you, Finn.

Mercedes

I'm grieving. And I greive by insulting those who mean the most to me. It's just a coincidence that it's also what I do when I'm not grieving.

Sue

Glee Season 5 Episode 3 Music

  Song Artist
Glee cast seasons of love Seasons of Love Glee Cast iTunes
Glee cast ill stand by you the quarterback I'll Stand By You -- The Quarterback Glee Cast iTunes
Glee cast fire and rain Fire and Rain Glee Cast iTunes