with both the Levites and the singing men, that is, those who were under Asaph, and those who were under Heman, and those who were under Jeduthun, with their sons and brothers, clothed in fine linen, sounded out with cymbals, and psalteries, and harps, standing toward the eastern side of the altar. And with them were one hundred twenty priests, sounding out with trumpets
Other versions
King James Version
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:)English Standard Version
and all the Levitical singers, Asaph, Heman, and Jeduthun, their sons and kinsmen, arrayed in fine linen, with cymbals, harps, and lyres, stood east of the altar with 120 priests who were trumpeters;New International Version
All the Levites who were musicians-Asaph, Heman, Jeduthun and their sons and relatives-stood on the east side of the altar, dressed in fine linen and playing cymbals, harps and lyres. They were accompanied by 120 priests sounding trumpets.