PURPOSE: To produce a firework capable of producing many continuous plosives simultaneously in spite of its whistling sound and simultaneously producing many great flashy sparks and fire sparks.

CONSTITUTION: This composition for fireworks comprises flashing and plosive grains prepared by adding a binder to a thermit agent consisting essentially of copper oxide, red lead, magnalium, aluminum, etc., and hardening the resultant mixture into a granular material and a whistling sound agent, etc., using potassium perchlorate as a main oxidizing agent.