They appointed the kohanim in their divisions and the Levites in their divisions over the service of God at Jerusalem, as it is written in the book of Moses.
Moreover, David and the commanders of the army, set apart for avodah the sons of Asaph, Heman, and Jeduthun who prophesied with lyres, harps and cymbals. The list of those who performed this work according to their service was:
The kohanim stood at their posts, as did the Levites with the musical instruments of Adonai that King David had made for praising Adonai—“for His mercy endures forever”—whenever David offered praise by their hand. Opposite them were the kohanim who sounded trumpets while all Israel was standing.