Nine Lessons and Carols
Since 1982 the  Director of Music has been Stephen Cleobury.  Each year he commissions a composer to write a new carol for the Choir.  The service ends with the carol "O Come all ye faithful".  This is followed by the Organ Voluntary: "In Dulci Jubilo" (BWV 729) by Johann Sebastian Bach and then another Organ Piece (which is heard on the radio but not on television).