William Congreve. 1670-1729. The Mourning Bride. Act i. Sc. 1. 'Music hath charms to soothe the savage breast, To soften rocks, or bend a knotted oak.'
1 Samuel 16:23
And it came to pass, when the evil spirit from God was upon Saul, that David took an harp, and played with his hand: so Saul was refreshed, and was well, and the evil spirit departed from him.