It's by Fleetwood Mac:
It's funny to watch Paul Rudd dance to this song in the 12-7-2013 episode.
Too bad that's not on YouTube,
Stashed in: Music Videos!, SNL
Harvest Moon Tonight. There's Nothing Special About It. At all.
Trans Siberian Orchestra - Wizards in Winter
Sia “Chandelier” video stars Dance Moms’ Maddie Ziegler, and it’s great.
SNL Celebrity Jeopardy meme