"must-listening" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "ref": "2007, Stephen L. Vaughn, Encyclopedia of American Journalism:",
          "text": "Public radio became “must listening” for Washington politicos.",
          "type": "quote"
        },
        {
          "ref": "2011, John Lewis, Radio Master:",
          "text": "Husing's description of the finish is absolute must-listening for any aspiring broadcast student.",
          "type": "quote"
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        {
          "ref": "2022, David Gergen, Hearts Touched with Fire: How Great Leaders are Made, page 169:",
          "text": "When radio became king, FDR was not the only one to seize upon its power. In the Midwest, a Catholic priest, Father Coughlin, had a Saturday afternoon radio show that spewed out anti-Semitism and fascism. It became must listening for huge segments of the population: […]",
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      "glosses": [
        "A radio broadcast that one is strongly encouraged to listen to; an unmissable radio programme."
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          "broadcast",
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          "listen",
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  "word": "must-listening"
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  "lang_code": "en",
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          "text": "Public radio became “must listening” for Washington politicos.",
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        {
          "ref": "2011, John Lewis, Radio Master:",
          "text": "Husing's description of the finish is absolute must-listening for any aspiring broadcast student.",
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        },
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          "text": "When radio became king, FDR was not the only one to seize upon its power. In the Midwest, a Catholic priest, Father Coughlin, had a Saturday afternoon radio show that spewed out anti-Semitism and fascism. It became must listening for huge segments of the population: […]",
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        "A radio broadcast that one is strongly encouraged to listen to; an unmissable radio programme."
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  "word": "must-listening"
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