(OOps, when you upload a file, it posts the topic). So I make this little messy patch, and works, kind of, although is completely monophonic. I don't know how to make it polyphonic. I don't even know if it is possible, according to the nature of pitchbend messages. Any help would be greatly appreciated.

Louis.

You might be interested in the MIDI Tuning Standard. http://www.midi.org/techspecs/midituning.php

You can also do it with the pitchbend method you describe by: 1) ascertaining the pitchbend amount setting of the synthesizer you're using (most synths are +/- 2 semitones, but it's usually settable on the receiving device) 2) knowing the desired cents deviation of each note of your scale from equal temperament 3) calculating (i.e. writing a Max patch that calculates) the desired pitchbend amount for each note, based on your knowledge of 1 and 2 above 4) distributing your played notes among 16 different MIDI channels so that each note can have a unique pitchbend applied to it

Thank you Christopher.

The MIDI tuning standard is an interesting thing, although I can't use it with my vsts or ableton's operator (if I understand it well). I'll go for the PB method. The 16 MIDI channels thing is what I was affraid of. It is unbelievable how MIDI is a limited system...