Daniel 3.5 lists the instruments whose sound is to bring about the general prostration before the statue:
“the horn, the pipe, the lyre, the trigon, the harp, the bagpipe, and every kind of music”.
A comparable list recurs in Daniel 3.7, 10 and 15.
This repetition is one of the most visible literary features of the chapter.
It produces a ceremonial effect: the reader almost hears the same official signal return each time the royal command is repeated.
Music is therefore not mere decoration. It is part of the mechanism by which royal authority coordinates the behavior of the crowd all at once.