Then answered one of the servants, and said, Behold, I have seen a son of Jesse the Bethlehemite, that is cunning in playing, and a mighty valiant man, and a man of war, and prudent in matters, and a comely person, and the LORD is with him.
Then answered one of the servants. Jewish tradition points to Doeg (Jerome, 'Quaest Hebraicae'). Whether he or some other of the king's attendants, it appears that David's talents and accomplishments as a musician were already celebrated.