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(More customer reviews)There are questions that are too big for science; are there gods, for instance, or what is love? And maybe we will never fully find out scientifically why music does what it does and why we care about it so. But for many reasons, music ought to be a profitable subject for scientific enquiry. It is, as Pythagoras knew, an activity strongly rooted in mathematics, and the physics of music is fairly well understood. It is as universal as language; all human cultures have some sort of music, indicating it does something indispensable. And we are increasingly able to figure out, with our sophisticated brain imaging gadgets, what brains do when they hear or think about music. The neuroscience of music is the area of expertise of Daniel J. Levitin, and he writes of it in _This Is Your Brain on Music: The Science of a Human Obsession_ (Dutton), a fascinating account of current music psychology. Levitin has produced a book wonderfully accessible to lay readers, since although he is an academic (he runs the Laboratory for Musical Perception, Cognition, and Expertise at McGill University), before he became a scientist, he had been a performing musician, sound engineer, and record producer, working with names like Steely Dan and Blue Oyster Cult. He does pull examples from Bach and Beethoven, but he is obviously more comfortable citing universally-known tunes like "Happy Birthday to You", "Somewhere Over the Rainbow", or "Stairway to Heaven". (Readers whose tastes range in previous epochs will possibly be surprised at the sophistication modern popular musicians have displayed.) Levitin has a good sense of humor and is a genial explainer.
He starts out with a forty page first chapter "What is Music?", which is as good a short explanation of key concepts as tone, scale, fifths, and timbre as anyone could want, and is a fine foundation for all that comes after, a collection of scientific lore and tidbits from all over. For instance, even if you are not a musician, you have a huge store of tunes in your memory. You may not have perfect pitch, the ability to know that an A flat is an A flat as soon as you hear it, but Levitin's own research has provided surprising evidence that your sense of pitch, even if you are not a musician, is really quite good. Subjects who were asked to sing a song from memory got the absolute pitch just right, or very close; they did the same with the song's tempo. There are differences in the brains of musicians and nonmusicians. The corpus callosum, the mass of fibers that connects the right brain hemisphere to the left, is larger in musicians, and is especially larger in those that started music training early. The overall lesson here, though, is that we are all musical, even if we are not musicians, and so non-expert musical brains are really very similar to expert ones. There are descriptions here of surprising research that makes clear how truly ready our brains are to incorporate musical experience. Fetuses in the last three months of gestation, for instance, can hear music within the womb, along with other outside and inside noises. Experiments have shown that if you repeatedly play a song into the womb, and then make sure the child does not hear it again after birth until it is one year old, and then play the music again, the infant will prefer hearing the womb-music rather than completely novel music. This was true whether the experimental music was Vivaldi or the Backstreet Boys.
Levitin certainly has connections; he tells of discussions with Francis Crick about themes in this book, as well as with Joni Mitchell. The final chapter, "The Music Instinct", is a response to cognitive scientist Steven Pinker, who spoke at a 1997 convention of researchers in music perception and cognition. Pinker took the dismissive stance that music was "auditory cheesecake", tickling the parts of the brain that were really for the important functions of language and (unlike language) useless as a force in human evolution. It is not surprising that Levitin and his fellow researchers disagree. Darwin himself felt that musical tones were used in conveying emotion and that those who were able to expend energy in singing or playing were demonstrating biological and sexual fitness. Musical success does make for high numbers of opportunities for spreading one's genes (just ask Mick Jagger). Interest in music peaks in adolescence, indicating a role in sexual selection. Music has been around longer than agriculture, and there is no evidence that language actually preceded music in our species. It may have promoted the cognitive development that was harnessed for speech. Only in the past few hundred years did music become a spectator activity, but in the eons when it could have shaped our social evolution, it was a group activity that may have promoted group togetherness and synchrony. It is an engaging final argument that serves to emphasize the importance of all that the book has presented before, a demonstration that looking at an important human activity in a scientific way only increases our wonder and delight in the activity itself.
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