A crisp, clear day unfolds outdoors where the distinctive sounds of nature subtly echo in the background. Suddenly, the serene ambiance is punctuated by the resonant sound of a metal panel being struck. The sharp, metallic clang reverberates through the open space, creating an echo that gradually fades away. The sound is intense and singular, implying a direct hit on the sheet of metal. The action repeats, generating a rhythmic pattern, each strike producing a unique tone as if the metal sheet is an unconventional musical instrument being played. As the striking continues, the acoustic properties of the metal panel become evident, producing a symphony of metallic notes that fill the outdoor expanse.