That was the producer who produced a couple of my solo albums. He produced my second, third and fourth solo albums. It was his project and I just joined him on it. I sang on one and played bass on another one.
With bass, especially bottom end, the vibration has to happen on stage otherwise the feel is wrong. This is why you can't scale the equipment down too far.
So by the time I taught myself the bass guitar at the age of 14, my hands were already pretty nimble.