There was also a second group of Levites: Zechariah, Jaaziel, Shemiramoth, Jehiel, Unni, Eliab, Benaiah, Maaseiah, Mattithiah, Eliphelehu, Mikneiah, Obed-Edom, and Jeiel. They were the Levite guards.
David and the commanders of the army chose some of the sons of Asaph, Heman, and Jeduthun to preach and play harps, lyres, and cymbals. Here is a list of the men who served in this way: