I have no idea if this is something possible considering the physical controls of the H9 but….I have a Boomerang 3. The BEST feature on that looper is the ability to start off with a tiny loop to set up your rhythm (I usually just use a muted strum). Then, the tiny loop gets multiplied as you layer on top your full chord progression. The little loop acts like a metronome as you compose the rest of the chord progression. What's nice about this is that you don't need to count out measures as your building up loops. (check out the Boomerang getting started Youtubes for how this works)
