John -- Interesting.

I have cerebral palsy and cannot walk with any steady rhythm at all (I can walk with arm cuff crutches for short distances before I get too tired, and I cannot walk and talk at the same time, at all, much less hop, skip or jump.

In fact, as muscle coordination and rhythm perception are both processed in the cerebellum, and it's in my cerebellum where my C.P. is manifest, I'm wondering if that's why my form of mild amusia takes the form of rhythm deafness while my mother's took the form of pitch (or key) deafness. Now, in the time since my early childhood, doctors and therapists are discovering that if therapy is started super young (like at three months old), the brain can find work-arounds for the glitchy neurons. But that was after my time, and even so, doctors and therapists don't seem to think musical proficiency is a very high priority, compared to walking, etc.

Tsk. No accounting for priorities.