In the spirit of the holiday season, I present to you all:
All I Want For Christmas (Is For Morse to Finally Make a Move On Me) (Joan)
Last Christmas (Was the Same As The Year Before. And the Year Before That.: Worked Until Midnight, Then Drank Myself Asleep)
This Christmas (Did You Not Listen to the Previous Track?!?!)
It's the Most Wonderful Time of the Year (*exasperated chuff*)
It's Beginning to Look a Lot Like Christmas (But Maybe Don’t Use Tinsel On The Evidence Board Instead of String, Boys?) Strange
I'll Be Home For Christmas (Solely From Guilt, Most Likely Sleeping in the Lumber Room) Feat. Gwen
Baby, It's Cold Outside (Because I Wear The Same Crappy Car Coat All Year Round)
Do You Hear What I Hear? / That One Church Bell Is Slightly Flat (Feat. Peter Jakes)
Santa Claus Is Coming To Town / And He Best Not Be Bringing Any of That London Business to Oxford, If He Knows What’s Good For Him (Fred)
What Are You Doing New Year's Eve? And Will the Police Need to Get Involved?
The Twelve Days of Christmas (Dear God, try to properly staff a police station when everyone wants a holiday. Whatever happened to duty?) Bright
Silent Night (Except For The Occasional Gunshot)
Grandma Got Run Over By a Reindeer (A Hoof to the Head, or, In This Particularly Gruesome Circumstance , Matriarchal Death By Ungulate, Genus: Rangifer) Max
We Need a Little Christmas (No, We Don’t, Actually)
What a Wonderful World (Is It, George? Is It Really?)
Rockin’ Around the Christmas Tree (Is That Really Proper Behaviour to Celebrate the Birth of Our Lord? Damned Impertinent of This Generation) Bright
You're a Mean One, Mr. Grinch (Maybe I Like Grinches?) Shirley
Do You Want to Build a Snowman? (Not Without the Proper Paperwork, Matey) Strange
The First Noel (Two More and They Pull Your License)
There's No Place Like Home For The Holidays (Except If You Grew Up in Lincolnshire With People Like Cyril and Gwen)
I Heard The Bells On Christmas Day (And That Swot Morse Keeps Insisting One is Flat) Feat. Peter Jakes
Hark! The Herald Angels Sing! (Violating the Oxford City Noise Ordinance #318(C)2(e)(1) subsection 16, £12 fine)
Have Yourself a Merry Little Christmas (That’s an Order, Morse. Go home!) Feat. Fred Thursday.
(With thanks to @too-antigonish for assistance with mixtape compilation)