}
break;
case MidiModel::NoteDiffCommand::Velocity:
cmd->change (note, prop, (uint8_t) (note->velocity() + idelta));
break;
case MidiModel::NoteDiffCommand::Length:
}
break;
case MidiModel::NoteDiffCommand::Velocity:
cmd->change (note, prop, (uint8_t) (note->velocity() + idelta));
break;
case MidiModel::NoteDiffCommand::Length: