I can't believe XTC haven't had the treatment yet. Much of what XTC did is reasonably unknown unfortunately.
To be honest, 12 random XTC tracks would do a good job, but here's my take.
Harvest Festival (Apple Venus)
Seagulls Screaming Kiss Her Kiss her (Big Express)
No Language in our Lungs (Black Sea)
Roads Girdle the Globe (Drums and Wires)
Pale and Precious (Dukes of Stratosphear)
Melt the Guns (English Settlement)
Ladybird (Mummer)
Bungalow (Nonsuch)
Chalkhills and Children (Oranges and Lemons)
Another Satellite (Skylarking)
This is Pop
Playground (Wasp Star)
I Wonder Why The Wonderfalls (Theme Tune to TV series Wonderfalls, Andy Partridge)
The last one is a cheat because it's a solo Andy Partridge song, which was the theme to the excellent, and short lived tv series Wonderfalls.
If anyone wants any XTC pointers, just let me know. They are a national treasure, and Andy Partridge is up there with the greatest songwriters of all time, in my opinion