Syllables repeated quickly back-and-forth between left and right channels, filtered and gradually mixing in and out, sounds appear as different words or sentences to some people, or as rhythms and melodies to others. based on an auditory illusion described by diana deutsch, in which our attention wanders and allows for a shift between what we hear and what we imagine—not as a puzzle to solve, but as information in raw form that we meet halfway as language or as music. Lyrics composed entirely by listeners taking note of the words and phrases they hear in the repetition.