I've been playing through a custom mission for descent-1, an old 6DoF shooter from the 90s. The mission contains custom MIDI music, with a few tracks written by members of the game's community, and the rest supposedly pulled from other games, according to those members.
No one, not even the mission's author, can remember which games, but I have those MIDI files, and can share them as part of an identification question. Is this too much of a stretch for this site's restrictions on Game Identification? I have no real proof that the MIDI files are from other games, aside from someone's words.
Link to main site question that this meta was raised for: Where are these two video game songs from?