overture

Noun
  1. Orchestral music played at the beginning of an opera or oratorio (synset 107054566)
  2. Something that serves as a preceding event or introduces what follows (synset 107341613)
    "training is a necessary preliminary to employment"; "drinks were the overture to dinner"
  3. A tentative suggestion designed to elicit the reactions of others (synset 107179000)
    "she rejected his advances"

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