A new algorithmic MIDI Sequencer in pure Python (Open Source)
https://www.reddit.com/r/algorithmicmusic/comments/1rht3oa/a_new_algorithmic_midi_sequencer_in_pure_python/

https://github.com/simonholliday/subsequence

BUILD A STEP SEQUENCER USING PYTHON

https://archive.fosdem.org/2017/schedule/event/python_steppy/attachments/slides/1711/export/events/attachments/python_steppy/slides/1711/slides.pdf

https://github.com/ygravrand/steppy?tab=readme-ov-file