boost::shared_ptr<Evoral::Note<TimeType> > new_note (new Evoral::Note<TimeType> (channel, time, length, note, velocity));
change.note = _model->find_note (new_note);
boost::shared_ptr<Evoral::Note<TimeType> > new_note (new Evoral::Note<TimeType> (channel, time, length, note, velocity));
change.note = _model->find_note (new_note);