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Music special: Singing in the brain

Learning to sing changes the way your brain works and it is never too late to start
Music special: Singing in the brain

Read more of our Music Special Issue:

Are animals naturally musical?

The illusion of music – don’t believe everything you hear

Flexible scales and immutable octaves

Singing in the brain – music can change the way you think

Web exclusive – hear five great auditory illusions

CAN anyone learn to sing? It’s a question that haunted me as I was writing my most recent book . My research had persuaded me that musicality is deeply embedded in the human genome, with far more ancient evolutionary roots than spoken language. Yet here I was, unable to carry a tune or match a rhythm. Friends and academic colleagues claimed this was simply because I had been “turned off” from music as a child and if only I took a few lessons I would find my voice. Maybe they were right. So humiliated was I by music teachers who made me “sing” alone in front of the class that I dropped music at the first opportunity and haven’t participated in anything musical for over 35 years. Perhaps I could learn to sing.

The more I thought about it, the more I realised that here was an opportunity not to be missed. As well as testing whether I could improve my tone, pitch and rhythm, perhaps I could also find out what was happening inside my brain as I tried to learn how to sing. I had recently read an article by researcher , UK, entitled “The song system of the human brain”, and then met him at a conference. With the help of functional MRI he had begun to identify which areas of the brain are recruited when we engage with music. Some of these areas are evidently used for both music and other activities and some, such as the planum polare, in the temporal lobe, appear to be specialised for processing music. I wanted to know whether learning to sing could actually change the way my brain worked.

I emailed Larry just before Christmas in 2005, suggesting we collaborate on an experiment: I would have my brain scanned while singing, then take one year of singing lessons before having another scan to see whether anything had changed. Larry agreed, so I found myself a singing teacher, Pam Chilvers, and the three of us met early in 2006 to design the study. We agreed that I would be tested on eight technical exercises, covering various musical tasks such as sustaining a pitch, singing scales and in rhythm. I would also learn two songs: A Gaelic Blessing by John Rutter and Lascia ch’io pianga by Handel. Listening to Pam sing these reminded me about my motivation for writing my book: why should evolution have a created a species that can sing with such remarkable beauty?

Before the first scanning session I had a couple of lessons to get me used to singing and to provide the rudiments of reading music. I think Pam was shocked at my lack of ability – she is used to teaching experienced musicians and precocious children and hadn’t actually believed me when I had said that I couldn’t sing in tune or follow a rhythm. She soon learned better. The scan took place in June 2006 and was a gruelling experience. For hours, I lay flat on my back, singing the technical exercises and song excerpts that I could see projected on a screen above. Each piece had to be sung three times, with Larry tapping my toe to let me know when I should start and stop. Later, he would process the images, subtracting the average of those taken during singing from those at rest, to give snapshots of the mental activity involved.

Then began a year of lessons. Pam taught me about posture and breathing; she gave me tasks to help me sing in tune and to expand my range. Once my pitch had improved, we worked on rhythm, and then tone and dynamics. She was always encouraging and optimistic, whereas I was a pretty poor student – lacking in confidence, getting frustrated and probably not working as hard as I should. In The Singing Neanderthals I argued that singing is a means for achieving well-being through social bonding. Sadly, that was not my experience – I simply became cross, stressed and dissatisfied. My singing wasn’t good for my family life either, as my children didn’t appreciate the late night practising. Nevertheless, I persevered and although my progress was limited, I did actually begin to enjoy some aspects of the venture, especially Lascia ch’io pianga. On a few occasions when singing with my wife we both experienced fleeting feelings of emotional intimacy as our voices blended into one – but then I would stumble and the moment would be lost.

Encore!

The second brain scan, in July 2007, was as challenging as the first. We repeated the same technical exercises and song excerpts in exactly the same way. Lying still was even more frustrating than the last time because I had learned that moving my body was as important to singing as was flexing my vocal cords. I left the scanner feeling exhausted, but this time I was also elated that my work for the experiment was done. It was now over to Larry to compare my “before” and “after” scans to see whether the year of singing had changed my brain. I was doubtful, because I felt my singing had barely improved. So I was surprised when Larry told me that not only had there been significant changes in my brain activity, but that these fitted with his understanding of how the brain supports musical performance (see Diagram).

Music special: Singing in the brain

So, can anyone learn to sing? I am still not sure, but I did learn more about singing by spending a year trying to do it than in years reading about it. By understanding just how remarkably difficult it is to sing – to simultaneously and unconsciously manage pitch, rhythm, timbre, tone and dynamics – I am even more mystified as to why humans have evolved such an amazing ability.

Read more about music in our special issue

The Human Brain – With one hundred billion nerve cells, the complexity is mind-boggling. Learn more in our cutting edge special report.

Singing in the brain

After a year of singing lessons, Steven Mithen’s brain activity had changed. His MRI scans show marked increases in the Brodmann area (BA 45) in the inferior frontal gyrus, which is associated with generating melody and harmonisation and with some aspects of rhythm. Activity also increased in two areas of the superior temporal gyrus – in the planum polare (BA 38), implicated in the representation of tonality, melody and harmonic relations, and in BA 22, which is involved with auditory processing of musical sounds. These changes reflect Mithen’s improved ability to control pitch, project his voice and convey musical phrasing.

Most of the enhanced activity was on the right, consistent with the idea that the right hemisphere is key in the early stages of musical development, with both hemispheres coming into play as higher skills emerge. Other scans showed decreased activity in areas associated with auditory working memory, verbal information processing and spatial-temporal attention, probably because, with time, Mithen came to rely less on conscious thought-processing while singing and sight-reading music.

Larry Parsons

Topics: Music

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