Fast, high-energy horror metalcore about a sinister killer doll. Use exclusively extreme vocals—no clean singing—with rapid screams, shouted hooks, and layered harsh vocal accents. Open with a toy music-box tune, a winding spring, and an original manic childlike doll laugh, then hit immediately with jagged low-tuned guitars and punchy drums. Make the riffs angular and chopped, with sudden tempo shifts, unexpected transitions, and multiple heavy breakdowns. Add toy sounds, plastic clicks, tiny footsteps, and stylized cinematic impacts as spooky accents; keep violence implied and non-graphic. Make the chorus catchy and forceful, driven by screamed vocals. Use a clean, polished, high-quality mix: tight drums, defined bass, clear guitar separation, no static or lo-fi noise. Frightening, playful, chaotic, and original.