I am working on a midi keyboard controller project.  I am trying to create a waterfall keybed controller for organ vst software.  This is something that is not available on the market any longer.  I think Doepfer was the last.  So, I purchased a Fatar keybed and off I went.  I am good up to the point of the code.  I am using a librady call Control_Surface.  It looks like it will work, however, there is an issue with the dual contacts per key on the keybed.  The TP-80 has two contact per key.  While an organ does not use aftertouch, this is handy for hand placement on the key.  The software cannot read a matric large enough for all 61 keys.  Does anyone have experience in this realm that could help?  I have been searched the internet and found nothing that addresses this.  So, I thought I would try this forum.