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    "```\n",
    "[Hand Shapes] ──► constrain instrument's continuous sound space\n",
    "     │\n",
    "     ▼\n",
    "[Chord Voicings / Fingerings] ──► repeatable \"filters\" of tone\n",
    "     │\n",
    "     ▼\n",
    "[Playing Styles] ──► recognizable patterns tied to technique\n",
    "     │\n",
    "     ▼\n",
    "[Genres] ──► social categories born from constrained hand-filters\n",
    "     │\n",
    "     ▼\n",
    "[Radio Bands] ──► spectrum narrowed into discrete channels\n",
    "     │\n",
    "     ▼\n",
    "[Radio Stations] ──► each \"channel\" takes on a genre identity\n",
    "```\n"
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