"race music" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "rhythm and blues"
      },
      "expansion": "rhythm and blues",
      "name": "m"
    }
  ],
  "etymology_text": "In use from 1920, replaced by rhythm and blues in the 1940s.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "race music (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Undetermined quotations with omitted translation",
          "parents": [
            "Quotations with omitted translation",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Musical genres",
          "orig": "en:Musical genres",
          "parents": [
            "Genres",
            "Music",
            "Entertainment",
            "Art",
            "Sound",
            "Culture",
            "Energy",
            "Society",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2015, Deena Weinstein, Rock'n America: A Social and Cultural History, University of Toronto Press, page 29",
          "text": "LA's most popular “race music” radio shows featured a white disc jockey, Hunter Hancock, from Texas. He featured black artists on his “Harlem Matinee,” which aired every afternoon starting at four.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Commercially recorded African-American popular music from the early 20th century, including blues and jazz."
      ],
      "id": "en-race_music-en-noun-GOzMNqn~",
      "links": [
        [
          "music",
          "music"
        ],
        [
          "African-American",
          "African-American"
        ],
        [
          "popular music",
          "popular music"
        ],
        [
          "blues",
          "blues"
        ],
        [
          "jazz",
          "jazz"
        ]
      ],
      "raw_glosses": [
        "(dated, music) Commercially recorded African-American popular music from the early 20th century, including blues and jazz."
      ],
      "tags": [
        "dated",
        "uncountable"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "word": "race music"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "rhythm and blues"
      },
      "expansion": "rhythm and blues",
      "name": "m"
    }
  ],
  "etymology_text": "In use from 1920, replaced by rhythm and blues in the 1940s.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "race music (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English dated terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Undetermined quotations with omitted translation",
        "Undetermined terms with quotations",
        "en:Musical genres"
      ],
      "examples": [
        {
          "ref": "2015, Deena Weinstein, Rock'n America: A Social and Cultural History, University of Toronto Press, page 29",
          "text": "LA's most popular “race music” radio shows featured a white disc jockey, Hunter Hancock, from Texas. He featured black artists on his “Harlem Matinee,” which aired every afternoon starting at four.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Commercially recorded African-American popular music from the early 20th century, including blues and jazz."
      ],
      "links": [
        [
          "music",
          "music"
        ],
        [
          "African-American",
          "African-American"
        ],
        [
          "popular music",
          "popular music"
        ],
        [
          "blues",
          "blues"
        ],
        [
          "jazz",
          "jazz"
        ]
      ],
      "raw_glosses": [
        "(dated, music) Commercially recorded African-American popular music from the early 20th century, including blues and jazz."
      ],
      "tags": [
        "dated",
        "uncountable"
      ],
      "topics": [
        "entertainment",
        "lifestyle",
        "music"
      ]
    }
  ],
  "word": "race music"
}