Theme tunes to imaginary TV shows

Landscape’s “The Hell Holes of Your Anus” album is a brilliant piece of work, containing as it does more musical invention than most artists have in their entire catalogues. Hidden away on side 1 is something called Sisters. I’ve always thought of it as the theme tune to a TV show about a pair of feisty crimefighting nuns.

Do you have any tunes/bits of music that are basically theme-tunes in waiting?