Thanks. I have numerous software and hardware instruments that use the tuning formats you mention, including MTS. They can (with the exception of hardware instruments, AFAIK) be used with Dorico but the problem is that Dorico is not able to re-map midi notes, unlike Finale, where you can set the number of steps in the octave and the number of steps (midi notes) that each user-defined accidental shifts up or down. And this system is not even planned to be included in future versions of Dorico. Presently, we’re left with pitchbend. As the microtonal accidentals don’t affect playback in Dorico (yet), we could write the score with the purely graphical microtonal accidentals and then add pitchbend values to each microtonally affected note (this is how Just Intonation or non-octave tunings are done in Sibelius and Finale, although in Finale, you can assign the pitchbend values to the accidental symbols themselves). But Dorico can’t do pitchbend! Which brings us to the CC / Key switch method. Minimum PB range is +/- 1 semitone, so the scale of the 128 values of RPN is indeed coarse but let’s say we’re happy with the 1.6 cent increments that it gives us. So in Bidule, we’d create a patch that translates a CC value 0…127 to a corresponding pitchbend value -63…+64. Is it possible to write CC values (using the ‘technique nodes’ that you mention?) into the score in Dorico, and force them invisible in the printed score?