{
  "nc_version": "0.1",
  "title": "B♭ 7♭9 chord, rootless B (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_B.flac",
  "format": {
    "mime": "audio/flac",
    "container": "flac",
    "codec": "flac",
    "lossless": true,
    "sample_rate": 48000,
    "bit_depth": 24,
    "channels": 2,
    "frames": 209455,
    "pcm_md5": "3953f910d8e6fac37b4b37432880f647"
  },
  "size_bytes": 263207,
  "sha256": "7ed48d1981e386400f8ba3d5e79f856bc94d088c6918fb8ef55feddac98b6f31",
  "type": "chord",
  "key": "A# major",
  "chords": [
    "Bb7b9"
  ],
  "loopable": false,
  "register": {
    "low": "G#3",
    "high": "F4",
    "root": null,
    "bass": "G#3",
    "inversion": "third"
  },
  "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_B",
    "notes": [
      "G#3",
      "B3",
      "D4",
      "F4"
    ],
    "midi_notes": [
      56,
      59,
      62,
      65
    ],
    "bass_note": "G#3",
    "bass_midi": 56,
    "bass_degree": "♭7",
    "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": 130,
    "slot_of": 188,
    "start_bar": 259,
    "cut_start_frame": 27019538,
    "measured_onset_ms_from_grid": 0.562
  },
  "midi": "../../../midi/fullchords-v4/Bb/04_altered_Bb7b9_rootless_B.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": [
      "G#3",
      "B3",
      "D4",
      "F4"
    ],
    "size_bytes": 154,
    "sha256": "2d5121a0b75a3b8573981948cf625ebceaab502eed0c070ffb1e949e49728997"
  }
}