create style half life midi file all 45 instruments and with

K: Amin T: 100 BPM TS: 4/4 INST: Pad, Strings, Cello, Piano, ElectricGuitar (clean/ambient), SynthBass, Drums (electronic/kit), AtmosFX Mood: Serious, tense, brooding, urgent — cinematic "escape" vibe with a subtle Spanish/European color Structure: Verse — Chorus — Bridge (with recurring A motif / A–B–A' feel) Summary: This description points to a Half‑Life–inspired instrumental: atmospheric, slightly industrial/ambient and cinematic, centered on a minor key (A minor chosen for a somber, neutral minor feel). Tempo around 100 BPM gives a steady sense of motion appropriate for an "escaping" mood without becoming frantic. Standard 4/4 keeps the pulse straightforward for game‑style pacing. Primary instrumentation should combine synth pads and atmospheric FX with organic elements (strings, solo cello, piano) and a synth bass plus an electronic drum kit to bridge the organic/electronic Half‑Life aesthetic. A clean, reverb‑drenched electric guitar can add melodic urgency or counter‑melodies. Although you mentioned "all 45 instruments" — for a MIDI implementation you can distribute supporting colors across many GM patches, but keep these listed instruments as the core voices driving the piece. Structure recommendation: use a clear motif (A) that recurs and is developed (A → B contrast section → return to A with variations), or as a conventional Verse → Chorus → Bridge so you can build tension and then release into the "escape" chorus and then add a tense bridge before a final push/exit. Use reverb, low‑pass sweeps, and filtered noise FX to enhance the sense of atmosphere and movement.

Model: gpt-5-mini