"oldies goldies" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "p",
        "head": "oldies goldies"
      },
      "expansion": "oldies goldies pl (plural only)",
      "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": "English entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English rhyming compounds",
          "parents": [
            "Rhyming compounds",
            "Compound terms",
            "Rhyming phrases",
            "Terms by etymology",
            "Phrases",
            "Lemmas",
            "Multiword terms"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "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"
        }
      ],
      "glosses": [
        "A genre of music consisting of hit records from former eras, generally 30 or more years in the past."
      ],
      "id": "en-oldies_goldies-en-noun-1eEhu5FE",
      "links": [
        [
          "record",
          "record"
        ],
        [
          "era",
          "era"
        ]
      ],
      "related": [
        {
          "word": "golden oldie"
        }
      ],
      "tags": [
        "plural",
        "plural-only"
      ]
    }
  ],
  "word": "oldies goldies"
}

{
  "head_templates": [
    {
      "args": {
        "1": "p",
        "head": "oldies goldies"
      },
      "expansion": "oldies goldies pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "golden oldie"
    }
  ],
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English entries with language name categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "English rhyming compounds",
        "English terms with non-redundant non-automated sortkeys",
        "Pages with 1 entry",
        "en:Musical genres"
      ],
      "glosses": [
        "A genre of music consisting of hit records from former eras, generally 30 or more years in the past."
      ],
      "links": [
        [
          "record",
          "record"
        ],
        [
          "era",
          "era"
        ]
      ],
      "tags": [
        "plural",
        "plural-only"
      ]
    }
  ],
  "word": "oldies goldies"
}