Musical instruments have been used in the worship of God from the time when, after the passage of the Red Sea, Moses and Miriam sang their song of praise accompanied by timbrels. The worship of the Temple was noted for the great number and variety of musical instruments employed in it. As to when organs were first brought into use, it is not clearly known, but it is recorded that about the year 766 Constantius Copronymus, Emperor of Constantinople, sent an organ as a present to King Pepin of France. Soon after Charlemagne's time organs became common. In the Eleventh Century a monk named Theophilus wrote a curious treatise on organ-building. But it was not until the Fifteenth Century that the organ began to be anything like the noble instrument which it now is, the most comprehensive and important of all wind instruments.