There's nothing remarkable about it. All one has to do is hit the right keys at the right time and the instrument plays itself
Music is an agreeable harmony for the honor of God and the permissible delights of the soul.
I have always kept one end in view, namely, to conduct a well-regulated church music to the honour of God.
It's easy to play any musical instrument: all you have to do is touch the right key at the right time and the instrument will play itself.