I am looking for the document that fully describes Yamaha SFF (style file format) specification.

The explanation I can found in PSR9000 (8000) manual is not enough as it describes that style parts can be generated in MIDI channels 9-16, but looking at Yamaha styles, I can see that lower MIDI channels can also be filled with MIDI events.

I appreciate any information on the subject that is not documented in Psr9000 (8000) manuals.

Milan

Marcony..I believe that the midi data in the first few tracks of a Yamaha Style File are for when you play a minor chord.
Perhaps someone can give more input on this thread?

Graham UK