Credit: Fox Flash

So far on Glee, we’ve seen four seasons... 81 episodes... and now 500 songs!

During the March 7 episode, Season 4, Episode 15: "Girls (and Boys) On Film." Glee will air its 500th musical performance.

Wetpaint Entertainment spoke with Jane Lynch (Sue) at the red carpet for the 2013 Writers Guild Awards on February 17, and Jane revealed which song it will be.

“What is it? I don’t know what it is. I know it’s going to be a big deal. What is it — “Shout”?  [Starts singing] You make me want to shout!”

The Isley Brothers hit song was featured in 1978 hit film Animal House, and you can get a sneak peek of the New Directions group performance in the promo for Episode 15 — which just so happens to feature a solo by Blaine (Darren Criss).

In other words, we love this song already,

Reporting by Carole Glines.