A new study shows nonmusicians naturally invent songs with pitches and scales that follow rules of music composition.
For a better measure of tonal proclivities, Michael Weiss and Isabelle Peretz, psychologists at the University of Montreal, developed a test akin to writing grammatically correct sentences from scratch . In soundproof booths equipped with headphones and microphones, participants improvised melodies, crooning only “da,” in response to prompts such as instructions to sing a lullaby, a dance, a sad song, etc.
The researchers captured 924 recordings from 33 residents of Quebec, including 18 participants with congenital amusia—commonly known as tone deafness. In the most prevalent form of this condition, which is estimated to affect 1.5% to 4% of the population, individuals. But typical and amusic brains show similar electrical responses to out-of-scale notes.
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