'Glee' is known for its mash-ups of old and new songs and great Top 40 covers -- but the hit FOX show may be bringing some original music into the mix!

'Glee' music supervisor PJ Bloom let it slip at a pre-Grammy ceremony that there's talk of an episode where each glee clubber would tackle an assignment to compose their own original song, but Bloom didn't let on whether anything is set in stone.

The music of 'Glee' tops the charts each and every time it hits them, and has 107 Hot 100 hits under its belt. But we have to wonder -- would original songs do just as well, or is it simply that we like to hear our favorite characters lay new spins of our favorite songs?

'Glee' is all new tonight with a Justin Bieber-centric episode, 'Comeback.'