User:Codejourneysoftware/sandbox

```json {

 "metadata": {
   "title": "Piano Tablature Sample Structure",
   "composed_by": "Code Journey Software",
   "key_instructions": "Play with an instructional, grid-aligned rhythm in G Major",
   "grid_columns_per_line": 70
 },
 "sections": [
   {
     "type": "Intro",
     "_comment": "INTRO COMPONENT: Sets the tonality and tempo. Typically lower density data, acting as a structural starting line before vocals enter.",
     "lines": [
       {
         "type": "grid_line",
         "hand_positions": [
           { "position": "G Pos", "col": 0 }
         ],
         "chords": [
           { "chord": "G", "col": 0 },
           { "chord": "D", "col": 32 }
         ],
         "fingering": [
           { "finger": "1", "col": 0 },
           { "finger": "3", "col": 16 },
           { "finger": "5", "col": 32 }
         ],
         "lyrics": [
           [
             { "text": "(Instrumental", "col": 0 },
             { "text": "Intro)", "col": 14 }
           ]
         ]
       }
     ]
   },
   {
     "type": "Verse 1",
     "_comment": "VERSE COMPONENT (1 of 10): Primary storytelling structural block. Dynamically maps lyrics, strict finger patterns, and underlying chords step-by-step along the layout grid.",
     "lines": [
       {
         "type": "grid_line",
         "chords": [
           { "chord": "G", "col": 0 },
           { "chord": "C", "col": 32 }
         ],
         "fingering": [
           { "finger": "1", "col": 0 },
           { "finger": "2", "col": 5 },
           { "finger": "3", "col": 8 },
           { "finger": "1", "col": 14 },
           { "finger": "2", "col": 18 },
           { "finger": "3", "col": 24 },
           { "finger": "4", "col": 32 },
           { "finger": "5", "col": 36 },
           { "finger": "4", "col": 42 }
         ],
         "lyrics": [
           [
             { "text": "This", "col": 0 },
             { "text": "is", "col": 5 },
             { "text": "where", "col": 8 },
             { "text": "the", "col": 14 },
             { "text": "Verse", "col": 18 },
             { "text": "goes,", "col": 24 },
             { "text": "the", "col": 32 },
             { "text": "Verse", "col": 36 },
             { "text": "goes.", "col": 42 }
           ]
         ]
       }
     ]
   },
   {
     "type": "Chorus 1",
     "_comment": "CHORUS COMPONENT (1 of 10): Main melodic theme and hook. Recurring lyrical payload anchor that balances chord density and explicit multi-finger cues for high performance visualization.",
     "lines": [
       {
         "type": "grid_line",
         "chords": [
           { "chord": "D", "col": 0 },
           { "chord": "Em", "col": 16 },
           { "chord": "C", "col": 32 },
           { "chord": "G", "col": 48 }
         ],
         "fingering": [
           { "finger": "5", "col": 0 },
           { "finger": "4", "col": 5 },
           { "finger": "3", "col": 8 },
           { "finger": "2", "col": 14 },
           { "finger": "1", "col": 18 },
           { "finger": "2", "col": 22 },
           { "finger": "3", "col": 26 },
           { "finger": "1", "col": 32 },
           { "finger": "2", "col": 36 },
           { "finger": "3", "col": 40 },
           { "finger": "5", "col": 44 }
         ],
         "lyrics": [
           [
             { "text": "This", "col": 0 },
             { "text": "is", "col": 5 },
             { "text": "where", "col": 8 },
             { "text": "the", "col": 14 },
             { "text": "Cho-", "col": 18 },
             { "text": "rus", "col": 22 },
             { "text": "goes.", "col": 26 },
             { "text": "The", "col": 32 },
             { "text": "Cho-", "col": 36 },
             { "text": "rus", "col": 40 },
             { "text": "goes.", "col": 44 }
           ]
         ]
       }
     ]
   },
   {
     "type": "Bridge",
     "_comment": "BRIDGE COMPONENT: Deliberate departure from verse/chorus patterns. Offers a structural tonal shift, introducing distinct minor harmonies and rhythmic variations before looping back.",
     "lines": [
       {
         "type": "grid_line",
         "chords": [
           { "chord": "Am", "col": 0 },
           { "chord": "Bm", "col": 32 }
         ],
         "fingering": [
           { "finger": "1", "col": 0 },
           { "finger": "2", "col": 5 },
           { "finger": "3", "col": 8 },
           { "finger": "4", "col": 11 },
           { "finger": "5", "col": 15 },
           { "finger": "1", "col": 32 },
           { "finger": "3", "col": 35 },
           { "finger": "2", "col": 42 },
           { "finger": "1", "col": 46 }
         ],
         "lyrics": [
           [
             { "text": "Take", "col": 0 },
             { "text": "it", "col": 5 },
             { "text": "to", "col": 8 },
             { "text": "the", "col": 11 },
             { "text": "bridge", "col": 15 },
             { "text": "to", "col": 32 },
             { "text": "change", "col": 35 },
             { "text": "the", "col": 42 },
             { "text": "vibe.", "col": 46 }
           ]
         ]
       }
     ]
   },
   {
     "type": "Outro",
     "_comment": "OUTRO COMPONENT: Resolves and winds down the composition. Manages fading dynamics, descending scale fingers, and ending cadences to neatly conclude rendering logic.",
     "lines": [
       {
         "type": "grid_line",
         "chords": [
           { "chord": "C", "col": 0 },
           { "chord": "D", "col": 16 },
           { "chord": "G", "col": 32 }
         ],
         "fingering": [
           { "finger": "5", "col": 0 },
           { "finger": "4", "col": 3 },
           { "finger": "3", "col": 8 },
           { "finger": "2", "col": 16 },
           { "finger": "1", "col": 19 },
           { "finger": "2", "col": 23 },
           { "finger": "1", "col": 32 }
         ],
         "lyrics": [
           [
             { "text": "Fa-", "col": 0 },
             { "text": "ding", "col": 3 },
             { "text": "out", "col": 8 },
             { "text": "un-", "col": 16 },
             { "text": "til", "col": 19 },
             { "text": "the", "col": 23 },
             { "text": "end.", "col": 32 }
           ]
         ]
       }
     ]
   }
 ]

}

```