switch (alter) {
                                case -2: note.addAccidental(0, new Vex.Flow.Accidental("bb")); break;
                                case -1: note.addAccidental(0, new Vex.Flow.Accidental("b")); break;
                                case 1: note.addAccidental(0, new Vex.Flow.Accidental("#")); break;
                                case 2: note.addAccidental(0, new Vex.Flow.Accidental("#")); break;