David and the temple officials chose the descendants of Asaph, Heman, and Jeduthun to be in charge of music. They were to praise the LORD by playing cymbals, harps and other stringed instruments. Here is a list of the musicians and their duties:
Everybody stood up during the ceremony. The priests were in their assigned places, blowing their trumpets. And the Levites faced them, playing the musical instruments that David had made for them to use when they praised the LORD for his never-ending love.