Heman... Asaph... Ethan (or Jeduthun) were the precentors of David’s three choirs of Levitical minstrels (1 Chronicles 6:31-44). Heman was of Kohath, and Asaph of Gershon, as Ethan of Merari.
Related Commentaries of 1 Chronicles 15:17
1 Chronicles 15:17
17 So the Levites appointed Heman the son of Joel; and of his brethren, Asaph the son of Berechiah; and of the sons of Merari their brethren, Ethan the son of Kushaiah;