\property Staff.instrument = "2 Corni (E\\textflat)"
\property Staff.instr = "Cor. (E\\textflat)"
% urg: can't; only My_midi_lexer:<non-static> () parses pitch?
\property Staff.instrument = "2 Corni (E\\textflat)"
\property Staff.instr = "Cor. (E\\textflat)"
% urg: can't; only My_midi_lexer:<non-static> () parses pitch?