Moog Subharmonicon question

In one of my late night synthesizer youtube rabbit holes that I find myself spending more and more time in, I swear I came across a video of someone controlling the sequencer of the subharmonicon with a Keystep. I believe they were using the keys to change the overall key or at least root note of whatever sequence was playing. Now, I could be totally wrong here as I’m usually half asleep while watching some of these, but I was wondering if anyone here can confirm that something like this is possible, and if so, explain to me how to set it up to do so? Thanks!

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