Harmony
Opera
Mutual synonyms
Both words in one sentence
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In this movie, a love of singing seems to be a defining characteristic of spotted eagle rays; when we see a school of them traveling on their migratory journey, they're all singing a baritone opera song in perfect harmony.
Source: Western Animation / Finding Dory - At the Opera Tonight: The Harmony Aeronautics gang attend Sweetie Belle's performance as personal guests of the Princesses, giving them a chance to propose the concept of the flight harness.
Source: Fanfic / Earth and Sky
Cite this Source
Opera and Harmony. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/harmony/opera
Harmony & Opera. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/harmony/opera>.
Opera or Harmony. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/harmony/opera.
Google Ngram Viewer shows how "harmony" and "opera" have occurred on timeline