My synagogue has used "Sabbath Prayer" as a Sabbath Prayer - not really out of context, but it is life imitating art.
I can just imagine some doofus playing "Send in the Clowns" as a wedding processional - I've always wanted to write that into a comic novel or short story.
The one that I really think is weird, however, is "The Phantom of the Opera" as Halloween music - I know the original Leroux story is gothic, but the ALW version is too nuanced to fit with Halloween. Yet, GMA or Today featured Hugh Panaro on its Halloween show a few years ago ... and misspelled his name as "Parano."
You alone can make my song take flight.