Melanie Brown and Professor Green present the musical game show as comedy actor and presenter Alexander Armstrong and comedy compere Jimmy Carr go head to head lip-synching to hit songs. Their first choice of song is performed in civvies, but for their second the celebs must bring it all to the floor - with wigs, costumes and backing dancers.

• Jimmy Fallon

• Melanie Brown
• Stephen Paul Manderson
• Mel B