Song fics can often be very bad. I've received good reviews for song based fics that don't have the song in them.

So take a song you like, one you have the lyrics for.

Don't use the lyrics in the fic; either as lines the characters say, or as section breaks, or on the radio, or sung, etc.

Instead use the story behind the song as the story for the fic. So that the song could have been written about the story.

A crossover, if you can. Any genre, any characters, any pairings.

I would appreciate your keeping it as in canon as possible.

Anthony Stewart Head has played many characters other than Giles (including Frank N Furter on stage.)
I'd like a one shot describing a meeting between Giles and the characters that have met the 'other him'. As most of his recent appearances have been as drunks or liars or both this may cause some problems for Giles.
The meeting should be offical or formal, either for Giles on Council/ Coven business or for the others. And Giles can know the other him, be related in some way, or have never heard of him.