they chose the one exorcist film no one likes
But it's the only Exorcist sound track done by Ennio Morricone.
edit - on the film itself though:
"Exorcist II is demonstrably the worst film ever made. It took the greatest film ever made and trashed it in a way that was on one level farcically stupid and on another level absolutely unforgivable. Everyone involved in this, apart from Linda Blair, should be ashamed for all eternity." (Mark Kermode)