If you didn't see Studio 60's Christmas episode, then you should. Not only was it one of the show's best, but it featured a musical performance by New Orleans musicians displaced by Hurricane Katrina that's sure to put a lump in your throat. The musicians were led by Troy "Trombone Shorty" Andrews in an original arrangement of "O Holy Night." You hear carols a thousand times, and after awhile, they lose the power to move you. This performance brought all that power back. You can now download the track as a free MP3 from NBC's Studio 60 website or iTunes.