What does Daniel 3:5 mean?

When you hear the sound of the horns, flutes, lyres, harps, pipes, and every kind of music, you must fall down and worship the gold statue King Nebuchadnezzar has set up. Daniel 3:5 - Modern Text Bible

(The king’s order is clear: when the music plays, everyone must bow to the statue, making worship of the idol a public act.)