2 Chronicles 5:12-13

12Also the Levites which were the singers, all of them of Asaph, of Heman, of Jeduthun, with their sons and their brethren, being arrayed in white linen, having cymbals and psalteries and harps, stood at the east end of the altar, and with them an hundred and twenty priests sounding with trumpets:)

13It came even to pass, as the trumpeters and singers were as one, to make one sound to be heard in praising and thanking Yhwh; and when they lifted up their voice with the trumpets and cymbals and instruments of musick, and praised Yhwh, saying, For he is good; for his mercy endureth for ever: that then the house was filled with a cloud, even the house of Yhwh;