"acoustic rock" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "name": "Music",
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      "derived": [
        {
          "word": "acoustic rocker"
        }
      ],
      "glosses": [
        "rock music played acoustically, i.e. on an acoustic guitar"
      ],
      "id": "en-acoustic_rock-en-noun-FO1vU0tI",
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        [
          "rock music",
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        [
          "acoustically",
          "acoustically"
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          "acoustic guitar",
          "acoustic guitar"
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  "word": "acoustic rock"
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  "derived": [
    {
      "word": "acoustic rocker"
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "rock music played acoustically, i.e. on an acoustic guitar"
      ],
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          "rock music",
          "rock music"
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        [
          "acoustically",
          "acoustically"
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          "acoustic guitar",
          "acoustic guitar"
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  "word": "acoustic rock"
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