K: Bmin
T: 115
TS: 4/4
INST: Sub-bass (distorted), Gritty Synth Bass, Lead Synth (cold/haunting), Cold Pads, Drum Machine (TR-808 style kick/snare), Metallic Percussion, Sharp Hi-hats, Glitch FX / Bitcrush, Riser / Filter Sweep
Mood: Cold, oppressive, tense, sinister, relentless — cyberpunk menace and mechanical pursuit
Structure: Intro → Main → Breakdown → Main return (Intro–A–B–A')
Summary:
This is a dark synthwave / darksynth cyberpunk piece drawing on the tense, minimalist, game-soundtrack vibe of the "Black Knife" theme and Furi. Use a minor key (B minor suggested) to emphasize bleakness and low-frequency weight. Tempo around 115 BPM sits squarely in the 110–120 range you specified and supports a steady, stalking pulse in 4/4.
Instrumentation roles and sound design:
- Sub-bass / Gritty Synth Bass: deep, distorted, saturated low end that pulses (sidechain to kick for punch).
- Drum Machine (TR-808 style): deep kick, crunchy snare/clap, heavy industrial textures; add metallic hits for the sharp, mechanical character.
- Lead Synth: a narrow, haunting motif (repetitive, slightly detuned) with cold timbre and light chorus/delay.
- Cold Pads: sparse, icy pads for atmosphere during intro and breakdown; automate filter/resonance for tension.
- Hi-hats & metallic percussion: sharp, rhythmic detail, often rigid 16th patterns with glitch edits.
- Glitch FX / bitcrush / risers: for transitions, filter sweeps and the breakdown rise.
Arrangement notes:
- Intro (0:00–0:20): focus on sub-bass pulse, glitch textures, distant lead, metallic hits — keep drums sparse.
- Main (0:20–1:00): full beat drops, aggressive bass and TR-808 elements, lead motif repeats to create pursuit energy.
- Breakdown (1:00–1:30): strip drums back to pads + bass, rising filter sweep and tension building; use automation to increase intensity before the final return.
- Final push: restore full kit and motif with added saturation, higher harmonic content, and denser percussion.
Mixing/process suggestions:
- Heavy low-end management (multiband saturation, distortion) and sidechain compression for groove.
- Use bitcrushing and sample-rate reduction sparingly on percussion/glitches for grime.
- Keep reverb on leads and pads cold and distant; use short, metallic reverbs on percussion to preserve clarity.
- Automation of filter cutoff and drive across sections will sell the tension and release.
Model: gpt-5-mini