'Glee' Final Season: Watch the First Full Performance

Glee Screengrab - H 2014

Glee Screengrab - H 2014

January can be a grim month. The fun of Christmas and New Year's Eve has passed, and all you've got are short days and cold nights with little to look forward to until spring — unless you're a Glee fan, of course.

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The Fox show starts up again on Jan. 9 for its sixth and final season. The first full performance — featuring Glee favorites Darren Criss and Lea Michele — has the hit the Internet. Check it out below.

In the clip, the all-male group the Warblers perform a version of "Sing," the lead single from Ed Sheeran's Grammy-nominated x, which came out last June. ("Sing," produced by Pharrell, sounds like Sheeran's homage to Justified-era Justin Timberlake.)

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Blane, played by Criss, returns this season as the coach of the Warblers. The group executes an impressively choreographed dance routine while performing "Sing" for Michele. It might make Sheeran jealous: The singer recently had to learn how to dance for his "Thinking Out Loud" video.

Catch new episodes of Glee starting on Jan. 9 at 8 p.m. on Fox.

This story first appeared on Billboard.com.