Iron Geomungo

High-energy cinematic industrial metal and trap instrumental for martial-arts demonstrations and intense workouts. Open with a low Korean geomungo ostinato, metallic plucks, taiko-like war drums, and a tense minor-key drone; build into crushing half-time kicks, distorted sub bass, aggressive tom fills, orchestral brass stabs, and sharp percussion accents. Alternate driving double-time sections with huge dropouts for movement cues, then return to a dominant main riff. Dark arcade-fighter atmosphere, disciplined and triumphant rather than lyrical, polished punchy mix, wide cinematic impacts, tight transients, no vocals.