IP and rendered MIDI files (Score 1)

Basically a MIDI file (rendered or otherwise) is a cover version or adaption of the original. Generally permission needs to be sought and granted by the original copyright owner before the adaption can be published or publicly perfformed (unless the original owner has made some kind of public allocation or usage statement). Furthermore there may be a matter of coming to a mutually agreed form of compensation to the original copyright owner for the adaption.