I use a pair of Venom Sample & Hold Analog Shift Registers to create a dynamic sequence. A Bogaudio 8 step sequencer determines when the shift register loops the 16th value back into step 1 input vs. when a new random voltage is sampled. All the timings are derived from the top left LFO running through a cascading Submarine Flip Flop. Each voice uses a different shift register tap for pitch, and different clock divisions from the flip flop to trigger the different voices. Bernoulli Switch gates randomly determine whether the trigger is passed on to each voice. Also different clock divisions trigger random decisions whether a given voice is raised up or down one octave, or remains at the default octave. I manually bring voices in and out with Mixer Mutes, and at one point I manually mute the shift register clock in a rhythmic manner so it does not always advance, thus keeping the pitch of each voice constant for a while. Each voice is raw, with no filters used, and the only effect is delay. There is no reverb, other than the reverb built into the Modal Synthesiser (Elements) modules.

Start the patch by un-muting at the Mute module near the bottom right corner.

You can use the 2nd Moots button at the left of the middle row to stop the shift register from advancing whenever you want.