{
  "schema_version": 1,
  "profile_id": "marimba-concert-lyrical",
  "kind": "instrument",
  "display_name": "Lyrical Concert Marimba",
  "version": 1,
  "status": "testable",
  "summary": "A five-octave marimba profile with alternating mallets, register-aware decay, measured rolls, and restrained lyrical voicing.",
  "used_by_current_catalog": true,
  "source_reference": "instruments/profiles/marimba_concert_lyrical.profile.json",
  "renderer": {
    "available": true,
    "engine_id": "soundfont_fluidsynth",
    "plugin_or_player": "FluidSynth",
    "version": "2.6.0",
    "host": "audio_tool.py render",
    "soundfont_id": "aurelia_concert_marimba"
  },
  "input_contract": {
    "current": "MIDI performance",
    "planned_web_input": "MusicXML plus this profile",
    "deterministic_performance_required": true
  },
  "performance_rules": [
    "Rotate round-robin programs for repeated strikes.",
    "Use measured rolls only where natural decay cannot connect the phrase.",
    "Keep low-register voicings open."
  ],
  "approval": {
    "status": "pending",
    "notes": "Technically testable with a verified synthetic asset; dedicated listening approval is pending."
  }
}