Somewhat off topic with respect to your question... A predecessor to the cello, the viol or viola da gamba, actually had more than markers: it had frets. Have

Somewhat off topic with respect to your question... A predecessor to the cello, the viol or viola da gamba, actually had more than markers: it had frets. Have a look at one being played: https://www.youtube.com/watch?v=IP0YrMKZhkM https://www.youtube.com/watch?v=IP0YrMKZhkM