This year is Tom Pickard's eighth singing in the Christmas services at King's College, Cambridge. Here, he speaks to William King about singing at Christmastime and what it's like recording a carol service for broadcast on the TV.

A Festival of Nine Lessons and Carols is on BBC Radio 4 at 3pm and Carols from King's is on BBC Two at 6.30pm.

Tom mentions John Rutter's 'All the stars looked down' which was recorded as part of a new release this year.