The sound of Ulsan's iron beak is a labor song that is sung while working on ironing, and each process has a different song.

It is composed of the sound of the iron beak bulmae, which is sung when the fire is stepped on and breathed into the wind, the sound of the gold beak being sung while burning a gold cord with wish paper, the sound of the baby's soothing sound, and the sound of the match's hammering.