I am pleased to learn that I may not have to go through the bother of implementing fusegraf after all. There is already a program called fusepak which mounts several different GRAFs onto the filesystem using fuse. Further, the author, Janusz Dziemidowicz, has expressed interest in implementing a BMS parser to allow an impressive amount of extensibility for fusepak. This part of the project is being written in (what I understand to be) an object-oriented, functional programming language: OCaml. If you have ever heard of this language, maybe you will wish to investigate this project as an academic matter. For my part, I’m looking forward to the finished product.