Samuel Samuel

To kick off Sunday's finale of The Glee Project (9/8c on Oxygen), the four remaining contenders — Samuel, Alex, Damian and Lindsay — receive their final homework assignment. The theme? Glee-ability, of course.

Which means the gloves are coming off.

The Glee Project finalists sound off on Christianity, reality TV editing and Ryan Murphy

"Now I've gotta fight, and this is when it counts more than ever," Samuel says. " I'm not about to back down whatsoever." And what about you, Alex? "There is nothing that's going to stop me from getting this," he says.

Watch the clip below to see what song they'll be singing — "What a perfect song!" Lindsay screams when it's unveiled — not for just any guest mentor, but Ryan Murphy himself:

Who would you like to see win? Who do you think will win? Let us know in the comments.