{
  "nc_version": "0.1",
  "title": "B♭ 7♭9 chord, rootless A (full chord set v4)",
  "creator": {
    "name": "Petrus",
    "link": "https://musicmatter.art/"
  },
  "license": "CC-BY-SA-4.0",
  "audio": "https://fullchords.musicmatter.art/Bb/04_altered_Bb7b9_rootless_A.flac",
  "format": {
    "mime": "audio/flac",
    "container": "flac",
    "codec": "flac",
    "lossless": true,
    "sample_rate": 48000,
    "bit_depth": 24,
    "channels": 2,
    "frames": 209455,
    "pcm_md5": "4201a52869b74b9245c1f3623e24c9af"
  },
  "size_bytes": 272876,
  "sha256": "4ba45398c3481f795a206595af690cced11db5b123b790e2eb7f45675a34c4dd",
  "type": "chord",
  "key": "A# major",
  "chords": [
    "Bb7b9"
  ],
  "loopable": false,
  "register": {
    "low": "D3",
    "high": "B3",
    "root": null,
    "bass": "D3",
    "inversion": "first"
  },
  "collection": "full-chord-set-v4",
  "chord": {
    "symbol": "Bb7b9",
    "root": "Bb",
    "root_pc": 10,
    "quality": "7b9",
    "quality_name": "7♭9",
    "family": "04_altered",
    "family_name": "altered dominants",
    "voicing": "rootless_A",
    "notes": [
      "D3",
      "F3",
      "G#3",
      "B3"
    ],
    "midi_notes": [
      50,
      53,
      56,
      59
    ],
    "bass_note": "D3",
    "bass_midi": 50,
    "bass_degree": "3",
    "root_in_voicing": false
  },
  "performance": {
    "bpm": 110,
    "meter": "4/4",
    "strikes": 1,
    "velocity": 96,
    "hold": "1 bar minus a 1/32 note, then 1 bar of release/silence",
    "attack_offset_s": 0.002,
    "duration_s": 4.363646,
    "instrument_note": "recorded from Petrus's Bitwig Studio bounce; not pitch-shifted, time-stretched or normalized"
  },
  "source": {
    "sequence_midi": "../../../midi/fullchords-v4/sequences/NC_chords_Bb_v4_sequence.mid",
    "sequence_slot": 129,
    "slot_of": 188,
    "start_bar": 257,
    "cut_start_frame": 26810084,
    "measured_onset_ms_from_grid": 0.146
  },
  "midi": "../../../midi/fullchords-v4/Bb/04_altered_Bb7b9_rootless_A.mid",
  "midi_info": {
    "derived_from_audio": false,
    "source": "performance_data",
    "confidence": "exact",
    "method": "the MIDI clip that was played to make this recording (from the 1-bar chord pack, transposed by whole semitones)",
    "timing": "one strike on the downbeat at 110 BPM 4/4, held 1 bar minus a 1/32 note; velocity 96",
    "notes": [
      "D3",
      "F3",
      "G#3",
      "B3"
    ],
    "size_bytes": 154,
    "sha256": "0b7a6a088f99c28339b434c59114c765f530818cd26a6d076cad6a8d243452dc"
  }
}