Tangledwood,
It doesn't matter HOW poor the file, if it is distributed, it is still an infringement of copyright.

There are DIFFERENT copyrights involved, including (but not limited to)

1. Copyright in the composition
Applies to ANY format in which the composition (Song, tune, book, picture) is represented, i.e. book, score, MIDI, MP3, etc

Author's copyright. May not be applicable to songs more than 100 years old.

Arranger's copright can be separate, for a SPECIFIC arrangement, even if there is NO copyright on the song.

2. Copyright in the performance
Applies to a SPECIFIC performance as a recording in any format (Like your MIDI file).
Held by the artist or publisher of the recording.

Either, or both, types may apply to a performance.

Once a song is PUBLISHED, as a score, text, or recording, you do not need PERMISSION to record it yourself, but you must pay royalties to the owner of the copyright if you distribute the recording in ANY format.

I hope this clarifies it, and if I have got anything wrong, I am sure someone will correct me. Also, note that copyright law varies from country to country, such as the length of time a copyright lasts.


Royalties