"show tune" meaning in English

{
  "forms": [
    {
      "form": "show tunes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "show tune (plural show tunes)",
      "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": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
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          "parents": [],
          "source": "w"
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          "kind": "other",
          "name": "Pages with entries",
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        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A popular song originally written as part of the score of a stage musical."
      ],
      "id": "en-show_tune-en-noun-0VLXs8f-",
      "synonyms": [
        {
          "word": "showtune"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "song written for a musical",
          "word": "musikaalisävelmä"
        }
      ]
    }
  ],
  "word": "show tune"
}

{
  "forms": [
    {
      "form": "show tunes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "show tune (plural show tunes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations"
      ],
      "glosses": [
        "A popular song originally written as part of the score of a stage musical."
      ]
    }
  ],
  "synonyms": [
    {
      "word": "showtune"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "song written for a musical",
      "word": "musikaalisävelmä"
    }
  ],
  "word": "show tune"
}