2 Chronicles 5:11-12

11Now all the priests who were present had consecrated themselves regardless of their divisions. When the priests came out of the holy place,

12the Levitical singers dressed in fine linen and carrying cymbals, harps, and lyres were standing east of the altar, and with them were 120 priests blowing trumpets. The Levitical singers were descendants of Asaph, Heman, and Jeduthun and their sons and relatives.