1 Chronicles 15:20

So the Levites appointed Heman the son of Joel; and of his brothers, Asaph the son of Berechiah; and of the sons of Merari their brothers, Ethan the son of Kushaiah;

and with them their brothers of the second rank: Zechariah, Ben, Jaaziel, Shemiramoth, Jehiel, Unni, Eliab, Benaiah, Maaseiah, Mattithiah, Eliphelehu, Mikneiah, Obed-Edom, and Jeiel, the doorkeepers.

So the singers, Heman, Asaph, and Ethan, were given cymbals of bronze to sound aloud;

and Mattithiah, Eliphelehu, Mikneiah, Obed-Edom, Jeiel, and Azaziah, with harps tuned to the eight-stringed lyre, to lead.

Chenaniah, chief of the Levites, was over the singing. He taught the singers, because he was skillful.

Berechiah and Elkanah were doorkeepers for the ark.