Albert Barnes Commentary Daniel 3:7

"Therefore at that time, when all the peoples heard the sound of the cornet, flute, harp, sackbut, psaltery, and all kinds of music, all the peoples, the nations, and the languages, fell down and worshipped the golden image that Nebuchadnezzar the king had set up." — Daniel 3:7 (ASV)

All the people, the nations, and the languages fell down ... - All except the Jews. An express exception is made in regard to them in the following verses, and it does not appear that any of them were present on this occasion. It would seem that only the “officers” had been summoned to be present, and it is not improbable that all the rest of the Jewish nation absented themselves.