Ha! I’ve been hanging out in the 63-68 bpm range lately on my Digitone. But I can’t seem to do melodies and beats well right now so it’s been soundscape city for me.
I did a live show with some industrial techno guys last spring and they practically fainted with expressions of “system error!” when I told them my set started at 54bpm . It was partially so I could at times run the Machinedrum at 2x speed while keeping my initial melodies slow and heavy. And the set did speed up at one point to 153bpm.