> > is there a way to get rid of the bass change clef indicator in the > > first ending? > > \once \set Staff.explicitClefVisibility = #end-of-line-invisible > before your \break at the end of volta 1.
This information should probably be added to the NR, together with an example. Can you prepare a patch (or even an MR) or formulate something that I can then massage accordingly? Werner