'Sing' in the Bible

And these who sing, heads of fathers of the Levites, in the chambers, are free, for by day and by night they are over them in the work.

David told the leaders of the Levites to appoint some of their relatives as musicians; they were to play various instruments, including stringed instruments and cymbals, and to sing loudly and joyfully.

Sing unto him, sing psalms unto him, talk ye of all his wondrous works.

Sing unto the LORD, all the earth; shew forth from day to day his salvation.

Then shall the trees of the wood sing out at the presence of the LORD, because he cometh to judge the earth.

All these were under the direction of their father to sing in the house of the Lord, with cymbals, harps and lyres, for the service of the house of God. Asaph, Jeduthun and Heman were under the direction of the king.