As a somewhat tangential discussion:

The youth pastor at my church when I was a senior in high school had a DX7, a Yamaha drum machine of the same vintage, and a rack of 2 or 3 of those TX modules, as well as an Arp Odyssey.

He would play barefoot - toes keeping an unbelievably decent rhythm on the drum machine (guess it was too hard to program patterns) and then had the DX controlling the TX modules. All presets of course, because there was almost nobody who could actually program the FM synthesis capability of the DX series.

I had a little fun on the Arp. At least it made sense to me.