Hi Peter! Oct 17 2023, Peter P. has written: ... ... I know that Midish is on the list. But upon import of a MIDI file into the sequencer it check for overlapping notes and - I'm quite sure - corrects them. This solution is far from ideal, because you have to import them and then export them, which you could do even in a script, but still... Well, if nothing else comes up, ready made, this may be a small soultion. I don't know what Midish does with unfinished notes. It is aware of frames and knows that some events come in pairs. Somehow it will deal with that situation, but I have never encountered it. HTH. Best wishes, Jeanette -- * Website: http://juliencoder.de - for summer is a state of sound * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * Audiobombs: https://www.audiobombs.com/users/jeanette_c * GitHub: https://github.com/jeanette-c But now I'm stronger than yesterday <3 (Britney Spears)