Hey there is a large microverse of fimfiction dealing with the plot of the Conversion Bureau. It's a large series of stories (350+ so far) dealing with overall plot of the dimensions of Equestria and Earth coming into contact with each other, the Earth's survival being threatened by this other world, and the radical choice for humanity's survival. I'm reading The First Year which seems to be one of the best places to start in reading about it (pretty good read too even if a bit awkward and dry at times) and its got me thinking of musical reactions to this fimfiction universe.
Wanted to know if someone has already tried a song or two on this topic yet as it seems like the perfect opportunity to do some epic prog rock /metal song or concept album about it.....much like Tarby's Cupcakes / Something Broke did (pony) or similar to non-pony concept albums (Queensryche's - Operation Mindcrime or The Who's Tommy),. If not an album then maybe a 10 min song. But thought it would be better to ask if this has been done before (maybe just a lesser known instrumental likely)? Didn't see anything on youtube.... Sounds like something i MAY want to start the ball rolling if other musicians have missed the opportunity.