Playing

But as Saul was sitting in his house with his spear in his hand, a spirit of distress from the LORD came upon him. While David was playing the harp,

All the people followed him, playing flutes and rejoicing with such a great joy that the earth was split by the sound.

…all the Levitical singers—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, accompanied by 120 priests sounding trumpets.

The whole assembly was worshiping, the singers were singing, and the trumpeters were playing. All this continued until the burnt offering was completed.

The singers lead the way, the musicians follow after, among the maidens playing tambourines.

And the streets of the city will be filled with boys and girls playing there.”

Even in the case of lifeless instruments, such as the flute or harp, how will anyone recognize the tune they are playing unless the notes are distinct?