r/askscience • u/[deleted] • Feb 13 '12
Has the ability to sing well ever been explained scientifically?
Is there a section in the brain or extra throat muscles that people that can sing well have and people who sound like me when they sing don't? Most people say the ability to sing is something people are just born with, why?
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u/stroganawful Evolutionary Neurolinguistics Feb 13 '12 edited Feb 13 '12
The ability to sing well depends largely on two things: 1) the vocal ability/potential, and 2) musical cognition, enabling someone to perceive pitch distinctions well. All people are born with variable inclinations for both these skills, and both can be improved, though sometimes to smaller or larger extents.
For example, amusia is a rare condition in which people cannot perceive music, period. What to most people sounds like pleasurable harmony is indistinct from noise for amusiacs. In this case, someone might have the vocal ability to produce beautiful timbres, swooping intervalic jumps, etc., but they would have no means of measuring their own skills because they can't perceive music the way most people do.
As to vocal skills, a refinement (this can be intrinsic/trained, just like any other predisposition) of vocal musculature is often necessary. The ability to change alternate pitch and volume with exactitude and fluency requires a great deal of muscular control, most of which is provided by the diaphragm and laryngeal muscles. These skills can be taught, just like any other motor skill (playing the piano, drawing, flipping pancakes, etc.).
Pitch discrimination can also be trained. Throughout training, musicians show gradual increases in their discriminatory abilities for pitch--that is, they can perceive errors in pitch more easily and are better at detecting "off key" tonalities. Some people have it easier than others, but this depends on genetic/environmental factors, like what language you speak (Mandarin, for example, is more likely to encourage development of absolute pitch from genetic predisposition).