2 Chronicles 5:12 KJ21

[12] also the Levites who were the singers, all of them of Asaph, of Heman, of Jeduthun, with their sons and their brethren, being rrayed in white linen, having cymbals and psalteries and harps, stood at the east end of the altar, and with them a hundred and wenty priests sounding with trumpets-