{
  "comments": {
    "new": "Volume Label: BG Disc 1\n\n-12 offset disc: no MCN"
  },
  "legacy": {
    "cdtext_catalog": {
      "new": "0000000000000"
    },
    "write_offset": {
      "new": "-12, 0",
      "old": "-12"
    }
  },
  "ring_codes": {
    "new": "CDC956250 R2F IFPI L240 12, 15 IFPI 4121\nCDC956250 R3J IFPI L239 21 IFPI4101",
    "old": "CDC956250 R2F IFPI L240 12, 15 IFPI 4121"
  }
}