The algorithm has almost certainly has done so many times. But it just writes numbers (in the form of MIDI sequences) to a file. Numbers aren't copyrightable. I

The algorithm has almost certainly has done so many times. But it just writes numbers (in the form of MIDI sequences) to a file. Numbers aren't copyrightable. I don't think there's any issue of them defending themselves. The bigger question is whether these numbers can be used as a defense when another musician gets sued.