David and Asaph # 14_2CH_35_15 # And the singers the sons of Asaph [were] in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king's seer; and the porters [waited] at every gate; they might not depart from their service; for their brethren the Levites prepared for them. 
David and Asaph # 16_NEH_12_46 # For in the days of David and Asaph of old [there were] chief of the singers, and songs of praise and thanksgiving unto God.