I've become quite adept at creating my own custom user ARPs for DRUMS. This is actually quite easy when you want to "glue together" multiple factory installed ARPs. I just assign the desired ARPs to the drum part's Scenes 1 - 8 and then use Record MIDI and manually change Scenes to my heart's content, then simply convert that to a Fixed User ARP.
What I don't know how to do is to create custom user ARPs for melodic instruments. Specifically, I don't understand how to get the MODX to understand and interpret what I'm playing on the keyboard (major, minor, etc.) and produce an appropriate result. One example might be if I want to create a four measure User ARP for horns that uses an existing Brass ARP in Scene 1, and the "Mute 4/4" Control ARP on Scene 2.
I would record 1 measure of Scene 1, then three measures of Scene 2 so there's some "white space" before it loops around again. My problem is if I hit a single note when recording the MIDI data, that's all I get when using my new Custom User ARP as I play various chords on the piano. If I record a C Major chord, again, my User ARP only sounds good when I play major chords. The same would be true when "gluing together" four factory Bass ARPs that work great when used individually, but are no longer intelligent when I assemble them via MIDI data record.
Can these type of intelligent ARPs only be made by Yamaha, or is there a way a lay-person can accomplish something similar?