Variable note length per step is a requirement, so that scotches the one duration fits all solutions.

Probably the more elegant solution would be to define the sequence in a .txt file, one line per event, and then read and parse that. more flexible, and much easier to write the sequencing. but this is for an installation that goes live in a few days, so... but thanks, folks!

@whale-av that's exactly right! I actually figured it out this morning but i appreciate the corroboration., thank you

I am working on an automated pipe organ project driven from PD, basically long droning chords. Most of the PD sequencers i've seen (there are a lot) generate single notes. My crude beginning is a subpatch that i can send a message to with 6 MIDI note#s and a duration in ms, and it plays those notes, but the timing is off - i'm sure i'm missing something basic but i'm stuck. I'm also sure this is the most brute force/inelegant approach imaginable, and if someone else has written something like this i'd be more than glad to hear.
2023Organ_ChordGen_05_subpatch.pd