+ SCM changes = get_property("chordChanges");
+ if (to_boolean (changes) && scm_is_pair(last_fret_notes_)
+ && ly_is_equal (last_fret_notes_, fret_notes))
+ fret_board_->set_property ("begin-of-line-visible", SCM_BOOL_T);
+
+ last_fret_notes_ = fret_notes;