Help Me OutĀ Gleeks!

Okay, so I’ve heard a song that’s going to be on an episode of Glee the first week of June, “Loser”. Sounds pretty good. But here’s the problem: I cannot place the singer in this song. It’s male. But it doesn’t sound like Finn, Puck, Kurt, Artie, or Will. Could this be the elusive voice of Matt or Mike coming to sing? Here’s a link to the song on YouTube:

http://www.youtube.com/watch?v=LnfwqLunvf8

Anyone recognize the voice? I can’t figure out who it is at all. Help!

Okay, it might be Will, but I can dream, okay?