stringNumberSpanner = #(define-music-function (StringNumber) (string?) #{ \override TextSpanner.style = #'solid \override TextSpanner.font-size = #-5 \override TextSpanner.bound-details.left.stencil-align-dir-y = #CENTER \override TextSpanner.bound-details.left.text = \markup { \circle \number $StringNumber } #}) \…