OK we've got
2 Coventry Carol
3 the horse pulling the Jingle Bells sleigh
4 we've got While Shepherds Watched, but I want an actual explanation.
5 Poet Laureates on the subject of Christmas, butt of sack.
7 Bing Crosby White Christmas
9 Boar's Head Carol

1,6,8 and 10 to go
(6 is not pantomime though I suppose that is an ingenious answer of a kind! But not what I am after, which will fit the question much better. We need a quite well-known misspelled insect)