The moment we have been waiting for has finally arrived - Glee 's take on Frozen, and specifically Lea Michele's version of Let It Go, has been revealed in a new preview.

Glee season 6 arrives on 9 January in the USA, with the UK date still TBC early 2015, and the new promo video gives us our first glimpse of the song that has basically soundtracked the whole of 2014.

In the teaser, a fast-paced montage sees Rachel Berry and Kurt Hummel return to McKinley High and tell Sue Sylvester (Jane Lynch) that they are bringing back the Glee Club.

PLUS, Mr. Schue (Matthew Morrison) can be seen telling Rachel, "I think you're going to like it here," which SEEMS to suggest that she will be joining as a member of staff (and possibly replacing Will)?

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But of course the main event is Lea belting out Let It Go over the top of the whole thing. Which she does spectacularly well.

"The final season is really its own story and its own location, and while the New York stuff will be alive, the final season is not New York-centric at all," creator Ryan Murphy told The Hollywood Reporter earlier this year.

"It really [will be] a lovely, fitting season that dwells on the original people that were on the show and what happens to them and how they give back. That really is the last season.

"We'll revisit some of the new kids that came and went. There's a return of the Jane-Matt characters in a big way. It's really interesting, very sweet, satisfying ending to the story."