for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
row = *(model->append());
row[columns.channel] = (*i)->channel() + 1;
for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
row = *(model->append());
row[columns.channel] = (*i)->channel() + 1;