Seems a rather recent one and I could be wrong, but I don’t remember Steinberg providing sound maps/patch lists for each and every Yamaha instruments released in the past.
So, as you want the sound map at disposal, it’s probably better to do the following (in Cubase Pro - with other versions, things are different as, as far as I remember, the External instruments feature isn’t available - from which, you’ll have to define the associated audio returns ‘by hand’, but the steps 1) and 4) are still relevent) :
- Create in Cubase first, an added MIDI device associated to it with the MIDI device manager window (Studio>More options>MIDI device manager…). In this window and using the Open device button, you’ll be able to create the wanted soundmap for it (more details in p.795 in the Cubase Pro Operation manual - ‘Defining new MIDI devices’).
- Create an external instrument for it (Audio connections window - External instruments pane)
- Add the instrument with the Instrument rack (VST instruments window).
- Add the needed MIDI channels afterwards.
That’s what I did for all my hardware instruments and, even if it seems rather complicated at first, it’s reliable on the long run. Simply, DO NOT forget to save the MIDI device created with the Export setup button in the MIDI device manager window…