Mattithiah, Eliphelehu, Mikneiah, Obed-Edom, Jeiel, and Azaziah were to play the lyres according to the sheminith style, ¹  as led by ²  the director;

while David and all Israel were energetically ¹  celebrating before God, singing and playing various stringed instruments, ²  tambourines, cymbals, and trumpets.

David told the leaders of the Levites to appoint some of their relatives as musicians; they were to play various instruments, including stringed instruments and cymbals, and to sing loudly and joyfully. ¹ 

All Israel brought up the ark of the Lord’s covenant; they were shouting, blowing trumpets, sounding cymbals, and playing stringed instruments.

David and the army officers selected some of the sons of Asaph, Heman, and Jeduthun to prophesy as they played stringed instruments and cymbals. ¹  The following men were assigned this responsibility: ² 

Asaph was the leader and Zechariah second in command, followed by Jeiel, Shemiramoth, Jehiel, Mattithiah, Eliab, Benaiah, Obed-Edom, and Jeiel. They were to play stringed instruments; Asaph was to sound the cymbals;

From the sons of Jeduthun: ¹  Gedaliah, Zeri, ²  Jeshaiah, ³  Hashabiah, and Mattithiah – six in all, ⁴  under supervision of their father Jeduthun, who prophesied as he played a harp, giving thanks and praise to the Lord.

All of these were under the supervision of their fathers; they were musicians in the Lord’s temple, playing cymbals and stringed instruments as they served in God’s temple. Asaph, Jeduthun, and Heman were under the supervision of the king.