Hello, Casio wk and ctk models have two midi ports, one can only be accessed from keypads and controllpanel, second one only from external sequencer or separate midicontroller. This second midiport can play 16 programs simultaneously....together with programs controlled only by keypads and controllpanel. It should be possible somehow to send notes played on first midiport BACK to second midiport and be able to trigger another programlayer from the same channelnumber. Even further, duplicated notes, converted to midichannels 1-16 could trigger massive performances if multiplication, channelconversion , keyrange editing, cossfades and velocityediting is done on midiflow that goes from USB BACK to USB. Different sounds for such a performances could be chosen from Mixer on channels 1-16 and saved as a registrations. Any ideas how this feedback could be achieved and how to edit such a midiflow? Is it safe?