See: https://lilypond.org/doc/v2.22/Documentation/notation/common-notation-for-keyboards
An example exists on that page for what you describe. On Tue, Sep 21, 2021, 4:04 PM Kenneth Wolcott <kennethwolc...@gmail.com> wrote: > Hi; > > how to do a slur (or phrasing slur) that crosses the staff (piano score)? > > see attached screenshot. > > Thanks, > Ken Wolcott >