Thanks all It works with \set Staff.ottavation = \markup {\concat {8 \tiny{vb}}} Damian On 17 Oct 2024, at 12:47, Mark Knoop
<m...@opus11.net> wrote: At 11:28 on 17 Oct 2024, damianlegassick wrote: I had this same problem. To investigate it, I
looked up the definition of ottavation-ordinals in ly/property-init.ly. I then created a new ottavation list called
ottavation-ordinals-b, with "va" and "ma" changed to "vb" and "mb" for the negative
ottavations. I included the new ottavation list in my lilypond file, and set the ottavationMarkups to my new list. I don't
see anything in property-init.ly thanks The definition is actually in scm/translation-functions.scm -- Mark Knoop
