Revelation 14:2-3

And I heard a voice from heaven, like the noise of many waters, and as the sound of great thunder; and I heard the sound of harpers playing on their harps:

Revelation 15:2-3

And I saw as it were a sea of glass mingled with fire; and those that had gained the victory from the beast, and from his image, and from his mark, and from the number of his name, standing on the sea of glass, and having harps to celebrate the praises of God.

Treasury of Scripture Knowledge

Summary

The singers went before, the players on instruments followed after; among them were the damsels playing with timbrels.

Bible References

The players

Revelation 14:2
And I heard a voice from heaven, like the noise of many waters, and as the sound of great thunder; and I heard the sound of harpers playing on their harps:
Revelation 15:2
And I saw as it were a sea of glass mingled with fire; and those that had gained the victory from the beast, and from his image, and from his mark, and from the number of his name, standing on the sea of glass, and having harps to celebrate the praises of God.