2 Chronicles 29:25-27

Young's Literal Translation

²⁵ And he appointeth the Levites in the house of Jehovah with cymbals, with psalteries, and with harps, by the command of David, and of Gad, seer of the king, and of Nathan the prophet, for by the hand of Jehovah [is] the command, by the hand of His prophets;

²⁶ and the Levites stand with the instruments of David, and the priests with the trumpets.

²⁷ And Hezekiah saith to cause the burnt-offering to ascend on the altar; and at the time the burnt-offering began -- began the song of Jehovah, and the trumpets, even by the hands of the instruments of David king of Israel.