Aram Zucker-Scharff

Anamorphosis:

a distorted projection or perspective requiring the viewer to use special devices or occupy a specific vantage point to reconstitute the image. The word “anamorphosis” is derived from the Greek prefix ana-, meaning back or again, and…

Defined in Wikipedia as:

a musical term referring to a ‘short, constantly recurring musical phrase, associated with a particular person, place, or idea.
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By association, the word has also been used to mean any sort of recurring theme, (…