(ly:context-set-property! context 'middleCPosition new-c0)
(ly:context-set-property! context 'originalCentralCPosition c0)
(ly:context-set-property! context 'ottavation string)))))
(ly:context-set-property! context 'middleCPosition new-c0)
(ly:context-set-property! context 'originalCentralCPosition c0)
(ly:context-set-property! context 'ottavation string)))))