Modules for playing with my band?

I'm interested in adding a live generative music element to a rock opera I'm working on. I'm having trouble understanding what sequencer and/or quantizer would be best for this.
This is all very theoretical right now, I am just starting to write this thing. But for my ideal wants, the system would be able to:

  • Generatively select pitches from a scale or key
  • Change which scale/chord it's selecting notes from on a fairly arbitrary rhythm (odd time signatures)
  • Edit the pattern of chords and rhythms in real time, without distracting the player from their main expression of creativity, which is through changing the sound of the instrument

And it would be kind of nice if I could speed up or slow down to match the speed of live musicians.

Anything come to mind? I looked at a few sequencers but I'm kind of drawing a blank. I don't think I'm experienced enough with sequencers to tell if they're able to change stuff around in real time or not.

https://modulargrid.net/e/stochastic-instruments-sig-4-track-stochastic-inspiration-generator
This can do exactly what you're looking for.

The SIG+ Stochastic Inspiration Generator is very live, well made, responsive, and accurate.
And fun. Lots of ghosts in that machine.

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Droid :-)

I remember an interview with James Blake (I think it was on Mylarmelodies exceptional "Why We Bleep" podcast), where he talked about Mutable Instruments Yarns for some tempo detection via Midi, but it also has an arpeggiator. So my brain went to using something like the Arturia Keystep to sequence chords that can then be fed as the notes for Yarns arpeggiator, using some other sort of pulse source to step through the chords on the Keystep. It could be as in tempo or not in tempo as you'd like, and could have some interesting interactions. I think there are a few companies making Yarns clones. Just an idea! Happy patching!

I remember an interview with James Blake (I think it was on Mylarmelodies exceptional "Why We Bleep" podcast), where he talked about Mutable Instruments Yarns for some tempo detection via Midi
-- Progspiration

I was interested in this because I have MI Yarns and I watched this interview. It's indeed Why We Beep with James Blake and at time 1: 06 :00 they discuss the Yarns.

I paid 170 € including shipping for a second-hand Yarns last year and there's better deals here on Modular Grid at the moment.