Taken from the Radio Times website (I've set my PVR to record it!):

BBC FOUR Christmas Session: Fire and Ice

Thursday 17 December
9:00pm - 10:00pm
BBC4

BBC Four celebrates midwinter with a blend of folk tradition and burlesque fun. Bellowhead and The Unthanks get together with singers Thea Gilmore and Lisa Knapp, plus other guests, to perform seasonal songs of their own alongside yuletide favourites. There are folk ballads, carols, parlour songs and carousing dance numbers, with everyone coming together for a final knees-up. Filmed at Shoreditch Town Hall, the setting evokes an old music hall combined with a festive Victorian family parlour.