Information for The Big Christmas Assembly at Darlington Hippodrome (formerly Civic Theatre), Darlington (Concert). Crack out the Christmas Jingles for an evening of pure nostalgia, stepping back in time for some joyous singalong tunes from Christmases past. You won't have to sit cross legged by the tree waiting for Santa, but you will be encouraged to sing along! Full of festive musical surprises, throwback mashups and reflections on growing up at Christmas time.