You might’ve heard of a Rubens’ Tube, wherein you poke holes in a tube, fill it with a flammable substance, light it up, watch the flames pop out from the holes, turn on a speaker, and see how sound causes the flames to oscillate. The “Pyro Board” takes the Rubens’ Tube to the next level by recreating the flame experiement in box form, and seeing how music effects the standing wave patterns.
Do not try this at home. Especially if you were that kid in physics class who always played with the Bunsen burner. Especially you.