Ten hand percussion instruments: tambourine, triangle, castanets, claves, maracas, guiro, cabasa, cowbell, agogo and bongos. A brief introduction to shapes and sound production, not a brand ranking or exhaustive classification. The video contains narration, not demonstration recordings of instrument sounds. All images are photorealistic reconstructions created with built-in OpenAI ImageGen for this project, not photographs of specific manufacturer models. Prompts and original assets are retained in project provenance. No third-party photographs, music or sound samples are used; no Creative Commons or public-domain licenses are claimed for these visuals. Narration is synthesized with Edge TTS; the English script and captions were prepared for this project.