He stationed the Levites in the House of 

Adonai with cymbals, harps and lyres, 

According to the Command of David, 

Of Gad the king’s seer and of

 Nathan the prophet. 

For the command was by the authority of 

Adonai through His prophets. 

So the Levites stood with David’s instruments and the 

Kohanim with the Trumpets.