2 Chronicles 5:12

5:12 All the Levites who were musicians, including Asaph, Heman, Jeduthun, and their sons and relatives, wore linen. They played cymbals and stringed instruments as they stood east of the altar. They were accompanied by 120 priests who blew trumpets.

2 Chronicles 35:15

35:15 The musicians, the descendants of Asaph, manned their posts, as prescribed by David, Asaph, Heman, and Jeduthun the king’s prophet. ¹  The guards at the various gates did not need to leave their posts, for their fellow Levites made preparations for them.

[35:15]  ¹ tn Or “seer.”