2CH 5:12

12 also 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:)