Craig Revel Horwood performs Happy on on Let's Sing and Dance for Comic Relief this weekend.
And here's a first look at his performance on Saturday night, from the streets of Blackpool.
Craig won't actually be competing on the this weekend, with his performance airing as part of a pre-recorded sketch during the live episode.
Those celebs in the third live heat on Saturday are a super group of The One Show reporters; TV presenter Alison Hammond; comedians Peter Firman and Ellie Taylor; actress Sally Lindsay and Gogglebox legends Steph and Dom Parker.
Meanwhile, the judging panel joining hosts Mel and Sue are will be the fabulous Miranda Hart, Jennifer Saunders, Julian Clary and Tameka Empson plus there will be some very special guests
As always, the public will vote for their favourite of the live performances and pick the top three celebs.
The one with the most votes will go straight through leaving the judges to pick their favourite of the two runners up.
Let's Sing and Dance airs at 6:45PM on BBC One on Saturday.
Red Nose Day is back on Friday 24 March 2017, and it’s all about your power to make the world a better place, simply by having a great time.
As always, all the money raised through Red Nose Day will help to change countless lives, both here in the UK and across Africa.
To get involved and make your laugh matter, go to rednoseday.com