How Learning an Instrument Rewires Your Brain

Put a tune in your left hand while your right hand answers it with light chords, keep your eyes a couple of notes ahead of your fingers, and listen to every note as it sounds. That is an ordinary piano lesson, and it is also one of the best-studied examples of how a brain changes with practice. For three decades, neuroscientists have scanned musicians, followed children through their first lessons and taught retirees to play. Some of what they found is solid. Some of it, above all the idea that lessons make you smarter, is much shakier than its reputation.

This guide covers what playing asks of your brain, with musical examples you can try today; what scans of musicians show, and why a scan alone can't prove that practice caused it; what happened when beginners aged about 6 and about 70 were followed for months; and how to practice so you train the skills these studies measured. Mood and stress are a separate story, told in our article on music, stress and mood.

What playing asks of your brain

Even a beginner's piece runs four jobs at once: two hands doing different things, two rhythms fitted together, eyes reading ahead of the fingers, and ears checking every pitch. That combination is why researchers use musicians as a model of brain plasticity. The neuroscientist Gottfried Schlaug, who has studied musicians since the 1990s, calls playing "an intense, multisensory, and motor experience" that usually starts young and goes on for a lifetime (Schlaug, 2015).

The four jobs that run together whenever you play from music. Each section below shows one of them in real notes.

Two hands, two jobs

In Schumann's The Happy Farmer (1848), the tune is in the left hand and the right hand answers with short chords just after the beats. Your left hand plays loud and smooth while your right hand plays soft and short: two volumes, two touches and two rhythms from one brain. Our study of The Happy Farmer gives you the test: if someone in the next room can whistle the tune back, the balance is right.

The Happy Farmer, pickup and bars 1–4, with the Peters edition's fingering. The left hand carries the tune; the right hand rests on beats 1 and 3 and plays its chords on "1-and, 2" and "3-and, 4" (bar 4 shifts the pattern but still never lands on 1 or 3). The complete score of The Happy Farmer is in our sheet music library.

Two rhythms at once

In three against two, one hand plays triplets while the other plays even eighths, and the hands meet only on the beat. When Krampe and colleagues (2000) asked professional pianists to play three against four, the pianists merged both hands into one combined rhythm at slow tempos and timed each hand separately only at fast ones. That matches the advice on our Polyrhythms sheet: learn the combined rhythm first, by saying "nice cup of tea."

Three against two, from our Polyrhythms sheet. Both hands play on "nice," the right hand alone on "cup" and "tea," the left hand alone on "of."

Tap it on a tabletop until it feels boring, then move it to the keys. If triplets are new to you, start with Triplets.

Eyes ahead of hands

Reading music means seeing the next notes while your fingers play the current ones. Furneaux and Land (1999) tracked the eyes of amateur and professional pianists as they sight-read. The professionals' eyes ran about four notes ahead of their hands and the amateurs' about two, yet both groups looked roughly one second ahead. A fast tempo shrank that span to about 0.7 seconds and a slow one stretched it to about 1.3. In the authors' reading, the buffer lasts about the same time for everyone, and professionals fit more music into it.

Where the eyes are while the hands play the fourth note: about two notes ahead for amateurs, about four for professionals, and about one second ahead for both (Furneaux and Land, 1999). The melody is Piece 1 of our Sight-Reading Set 2.

Our Sight-Reading sets train that buffer (the melody above is from Set 2): check the time signature and your first note, finger the trickiest bar in the air, then play straight through, slowly, without stopping for mistakes, one read-through per piece a day. In Set 3, where the hands first play together, the tip is to "keep your eyes in the right hand and glance down as each new measure begins."

Ears that check every note

Every note you play is also a note you judge. In a study by Micheyl and colleagues (2006), 30 classical musicians could hear pitch differences more than six times smaller than 30 non-musicians could. The gap was trainable: eight new non-musicians who practiced a pitch-discrimination task needed between 4 and 8 hours to match the musicians. Hearing and playing also fuse quickly. After nine non-musicians spent five days learning a short piece by ear, simply listening to it activated motor-related areas of their brains, including Broca's area, while an equally familiar piece they had never played did not (Lahav and colleagues, 2007).

Six intervals up from middle C, with the song cues from our Hearing Intervals sheet: Frère Jacques, When the Saints, Here Comes the Bride, Twinkle Twinkle, My Bonnie and Take Me Out to the Ball Game.

Intervals, the distances between two notes, are the place to start. Hearing Intervals gives a song for each one, going up and coming down: sing one a day, then test yourself with Ear Training: Intervals.

What scans of musicians' brains show

The first wave of evidence compared people who already play with people who don't.

A violinist's left hand stops the strings while the right hand draws the bow. In a 1995 study of string players, the brain's map of the left-hand fingers was larger than in non-musicians. Photo: Mostafameraji, CC BY 4.0, via Wikimedia Commons (resized).

• Elbert and colleagues (1995) found that in string players, the part of the somatosensory cortex that maps the left-hand fingers, the hand that presses the strings, was larger than in non-musicians. The right hand's map was not, and the earlier a player had started, the larger the difference.
• Schlaug and colleagues (1995) measured the corpus callosum, the band of fibers that links the two halves of the brain, in 30 professional musicians and 30 matched non-musicians. Its front half was larger in the musicians, and the difference came from those who had started before age 7.
• Gaser and Schlaug (2003) compared 20 professional and 20 amateur keyboard players with 40 non-musicians, all men aged 18 to 40. Gray matter in motor, auditory and visual-spatial regions was greatest in the professionals, intermediate in the amateurs and lowest in the non-musicians, and the professionals practiced about twice as much each day as the amateurs.

The regions named in the studies in this article, drawn as a schematic of one hemisphere (each region exists on both sides of the brain). The inset shows the brain cut down the middle, where the corpus callosum and the fornix lie.

Notice what these studies cannot tell you. They are snapshots, so they can't say whether practice built these brains or whether people whose brains were already like this found practice easier and kept going. Gaser and Schlaug said so themselves: some differences might come from innate predisposition, and only future experiments could settle how much. A 2017 meta-analysis of 29 studies (Talamini and colleagues) has the same limit: young adult musicians beat non-musicians on short-term and working-memory tasks by a medium margin, most clearly with musical sounds, but nobody was followed over time.

Cause or effect? Following beginners over time

To separate cause from selection, researchers scan and test the same people before and after training. The strongest designs also assign people to groups at random and give the comparison group a different activity, so that both groups expect to improve.

Three kinds of study, from weakest to strongest evidence of cause. Most research on music training and children's thinking skills uses the first kind (Román-Caballero and colleagues, 2022).

The landmark study is Hyde and colleagues (2009). They scanned 31 children from Boston-area schools, about six years old and without musical training, then scanned them again about 15 months later. Fifteen had taken weekly half-hour private keyboard lessons; sixteen had only their school's weekly 40-minute group music class of singing, drums and bells. The groups were not randomly assigned, and the lesson group's parents had more education on average, a statistically significant difference that the analysis adjusted for. Before training, their brains and test scores did not differ. Afterward, the keyboard children showed extra growth in the right motor hand area, in the middle of the corpus callosum and, at a less strict statistical threshold, in the right primary auditory cortex. The more a child's brain changed, the more their finger-sequencing or melody-and-rhythm scores had improved. On vocabulary, block design and reasoning tests, the groups did not differ.

Hyde and colleagues scanned each child twice, about 15 months apart, in an MRI scanner like this one, and compared how each brain had grown. Photo: Walter Davies, CC BY-SA 4.0, via Wikimedia Commons (cropped).

Larger studies followed. Habibi and colleagues (2018) followed children from age 6 for two years in a music program, a sports program or no program, all from the same backgrounds and with no brain differences at the start. In the music group, an auditory region of the temporal lobe matured differently on the left and right sides, and the corpus callosum showed signs of more organized fibers. Nan and colleagues (2018) assigned 74 Mandarin-speaking four- and five-year-olds, pseudorandomly, to six months of piano, reading lessons or nothing. The piano group improved most at telling spoken words apart by their consonants and showed stronger brain responses to pitch changes, while IQ, working memory and attention improved equally in all three groups. In a two-year school study of 110 children, music training improved fine motor skills and auditory memory compared with basketball or no training, but not emotion recognition, reasoning or other cognitive and social skills (Neves and colleagues, 2025).

The pattern is consistent: training changes the motor and listening skills it uses, and the brain areas that run them.

Does music make you smarter? The far-transfer debate

Psychologists call improvement on the trained skill near transfer, and improvement on something unrelated, such as IQ or math, far transfer. Music's near transfer is well supported. Far transfer is where the arguments start.

First, a myth to retire. The "Mozart effect" began with a 1993 report that ten minutes of Mozart raised college students' scores on a reasoning test. Christopher Chabris's 1999 meta-analysis found any boost small and limited to one kind of task, with no change in IQ or general reasoning. It was about listening, anyway; playing is a different question.

The classic positive result on playing is Schellenberg (2004): 144 children were randomly assigned to keyboard or voice lessons, drama lessons or no lessons, and the two music groups gained slightly more in full-scale IQ. Twins complicate the picture. In more than 10,500 twins, Mosing and colleagues (2016) found music practice and IQ only weakly linked (r of about 0.1), and within twin pairs the twin who practiced more did not have a higher IQ; the link came mostly from shared genes.

The largest of these summaries, Sala and Gobet's 2020 meta-analysis, pooled 54 studies of 6,984 children. The overall effect was small (g = 0.18). In studies where the comparison group did another activity, it fell to about zero (0.06, not statistically significant), and it was near zero in randomized studies too; only studies with neither safeguard showed a small effect, about 0.25. For scale: on an IQ test, where one standard deviation is 15 points, 0.2 would be 3 points.

What three meta-analyses found for cognitive and academic outcomes. The interval for Román-Caballero and colleagues is not given in their abstract, so only the estimate is drawn.

Other teams read the same evidence differently. Bigand and Tillmann (2022) reanalyzed Sala and Gobet's own data file. They argued that some comparison groups had trained directly on the tested skill, such as phonological training before a phonological test, and found a small significant effect of g = 0.23. Román-Caballero and colleagues (2022), looking only at programs that teach an instrument (34 samples, 5,998 children and teenagers), found g = 0.26 for short-term programs whether or not the groups were randomized, but also that children who chose music themselves were slightly ahead before lessons began (g = 0.28): evidence, in their words, for both nature and nurture. Meta-analyses of executive functions such as self-control report positive effects as well; for inhibitory control, Jamey and colleagues (2024) found gains across 22 studies, 8 of them randomized.

A fair reading in October 2026: expect lessons to improve music, fine motor control and listening; treat any boost to IQ or grades as small at best and still disputed. Choose lessons for the music, and count anything else as a bonus.

Three questions that sort strong studies from weak ones, whatever the headline promises.

Starting at 60 or 70: what the trials show

The best evidence for older beginners comes from the Train the Brain with Music trial in Geneva and Hannover (James and colleagues, 2020). Its 155 healthy retirees, aged 64 to 78 and without regular music-making in their lives, were randomly assigned to a year of piano lessons in pairs, one hour a week plus at least 30 minutes of practice at home five days a week, or to a year of weekly listening classes about musical styles and history, with homework but no music-making. The listening classes were designed to match the lessons for enjoyment, social contact and learning, so differences between the groups point to the playing itself.

The trial at a glance. Brain results come from the first six months; motor and thinking-skill results from the full year.

• After six months, both groups had improved on a tonal working-memory task, by 5.7% on average, and, taken together, the participants gained gray matter in the cerebellum and two other regions, with no difference between the groups across the whole brain. In a targeted analysis, the right primary auditory cortex held steady in the piano group and shrank in the listening group (Marie and colleagues, 2023).
• Also at six months, the cortex grew thicker in five auditory regions in the piano group compared with the listening group (Worschech and colleagues, 2022), and the fornix, a memory pathway that declines with age, kept its fiber density in the pianists while it declined in the listeners (Jünemann and colleagues, 2022).
• After a year, the pianists' fine motor skills had improved more than the listeners' (Worschech and colleagues, 2023).
• After a year, both groups had become more mentally flexible on task-switching tests, mostly in the second six months, and the pianists improved more on one of the measures (Mack and colleagues, 2025). The authors suggest transfer to thinking may take longer than six months.
• On a quality-of-life questionnaire, the pianists came out ahead of the listeners in the psychological, physical and environmental areas, though not in social life (Worschech and colleagues, 2025).

The sobering part: across the first six months, the whole brain kept aging in both groups. As first author Damien Marie put it in the University of Geneva's announcement, the results do not show that music rejuvenates the brain, only that it held back aging in specific regions.

Another randomized trial points the same way. In Bugos and Wang's 2022 study of 155 adults aged 60 to 80, sixteen weeks of group piano classes and of computer brain training both improved working memory and processing speed compared with no training, and only piano improved verbal fluency on a category-switching task.

Long-term observational studies add associations. Among Swedish twins, the twin who played an instrument in older age was less likely to develop dementia or cognitive impairment, though that rests on just 27 informative twin pairs (Balbag and colleagues, 2014). Among 10,893 Australians aged 70 or older, playing often or always went with a 35% lower dementia risk, and always listening to music with a 39% lower risk (Jaffa and colleagues, 2025). Associations like these can't rule out the reverse: people in the earliest, silent stages of decline may simply stop playing.

Researchers often frame these results in terms of cognitive reserve, which an Alzheimer's Association workgroup (Stern and colleagues, 2020) defines as the adaptability of thinking processes that helps explain why aging or disease affects some people's abilities less than others'. The Geneva–Hannover team argues that music-making is one way to build it. None of these studies shows that playing prevents dementia, and lessons are not a treatment: if you're worried about your memory, talk to a doctor. If you are starting at 65, the trial's routine is a sensible model: a weekly lesson, ideally with a partner, and half an hour at the keys five days a week.

How to practice so your brain does the work

Two lessons follow from the research. The benefits come from the skills you actually train, so train all four jobs on purpose. Dose may matter too: in the Geneva–Hannover trial, participants in both groups who attended more sessions and did more homework gained more on the working-memory task. That is a correlation within one trial, but it fits Gaser and Schlaug's link between gray matter and practice intensity. Keep your scales in Your Daily Technique Routine, and add these.

Hands together, slowly

Learn each hand alone, then put the hands together at a slower speed, the order How to Practice lays out. Contrary-motion scales make the friendliest first test: in C major both hands start on the same C, move apart and use the same finger at the same moment.

The first octave of our C major contrary-motion scale: the hands mirror each other, so both play finger 1, then 2, then 3, and both thumbs tuck under together on the fourth note.

Then give the hands different jobs. In the opening of Mozart's Sonata in C, K. 545, the left hand spins an Alberti bass under a singing tune. Our Alberti Bass sheet says to practice the left hand alone with your eyes closed until the pattern lives in your muscles, so the right hand is free to sing; our study of K. 545 covers the whole movement.

K. 545, bars 1–2. The left hand breaks each chord bottom, top, middle, top (C–G–E–G) in even eighths while the right hand sings. The complete score of Mozart's Sonata in C, K. 545 is in our sheet music library.

A few minutes each for rhythm, reading and ears

• Rhythm: loop one beat of "nice cup of tea" on a tabletop, then on the keys, as on Polyrhythms.
• Reading: two minutes of sight-reading, one read-through per piece, eyes a note or two ahead; Set 5 adds a tune in the left hand.
• Ears: one interval song a day from Hearing Intervals, then the echo game on Melodic Dictation: a friend plays three notes and you sing them back as numbers.

The three shapes our Melodic Dictation sheet teaches you to hear: steps, skips along the home chord, and leaps. Sing each one back as numbers before you write a note.

Memory: learn shapes, not notes

Musicians' short-term memory advantage is largest for musical sounds, and you put it to work by looking for patterns. In bars 13–15 of the Minuet in G, one five-note shape starts on C, then on B, then on A: a sequence. Learn the shape once and just move your hand. Motif and Sequence shows how composers build whole pieces this way, and our study of the Minuet in G points out the same sequence in bars 5–6.

Minuet in G, bars 13–16, right hand. Bars 13, 14 and 15 play one shape starting a step lower each time; bar 16 comes home to G.

Put together, the four add-ons take about ten minutes a day.

Ten minutes to add after your daily technique routine.

For practice habits that stick, such as when to practice, for how long and how to stay motivated, see how learning music boosts your productivity.

Free worksheets for this lesson

• Inside Schumann's The Happy Farmer — a tune in the left hand under after-beat chords, with a voicing test
• Polyrhythms — three against two, written out and mapped on a one-beat grid
• Triplets — three even notes in one beat, the step before polyrhythms
• Sight-Reading: Set 1 — four tiny pieces, read once each, no stopping
• Sight-Reading: Set 2 — four new pieces, four measures each, in C and G position, both clefs
• Sight-Reading: Set 3 — hands together for the first time, plus waltz time
• Sight-Reading: Set 5 — new keys, a left-hand tune and a march
• Hearing Intervals — a song for every interval, going up and coming down
• Ear Training: Intervals — eighteen items with audio: up or down, how far, major or minor
• Melodic Dictation — find home, trace the shape, write it down
• How to Practice — hands separate, slow, together, plus the fix-it loop
• Your Daily Technique Routine — five stations in about 15 minutes a day
• Contrary-Motion Scales — both hands from one note, moving apart as a mirror
• Alberti Bass — the spinning left-hand pattern under a melody
• Inside Mozart's Sonata in C, K. 545 — the most famous Alberti bass, in a full sonata form
• Motif and Sequence — spot the motif, and a page of notes becomes a few shapes you know
• Inside the Minuet in G — two voices, a motif and a sequence you learn once

What to expect from your brain

Learning an instrument changes the brain systems it uses: the maps for your fingers, the auditory areas that judge pitch and rhythm, and the links that let ears and hands work as one. That is well supported in children and, increasingly, in retirees. Whether it makes you better at everything else is a much smaller effect, and still argued over. The part the evidence supports best is the part you will enjoy most: getting better at music. If you'd like someone to check your hands-together playing, your reading or your ear, a Tissimo teacher can work on all four with you in a live lesson.

Sources

• Musical training shapes structural brain development (Hyde et al., 2009) — Journal of Neuroscience
• Brain structures differ between musicians and non-musicians (Gaser & Schlaug, 2003) — Journal of Neuroscience
• Increased corpus callosum size in musicians (Schlaug et al., 1995) — Neuropsychologia
• Increased cortical representation of the fingers of the left hand in string players (Elbert et al., 1995) — Science
• Cognitive and academic benefits of music training with children: a multilevel meta-analysis (Sala & Gobet, 2020) — Memory & Cognition
• Near and far transfer: Is music special? (Bigand & Tillmann, 2022) — Memory & Cognition
• Please don't stop the music: a meta-analysis of instrumental musical training (Román-Caballero et al., 2022) — Educational Research Review
• Investigating cognitive transfer within the framework of music practice (Mosing et al., 2016) — Developmental Science
• Music interventions in 132 healthy older adults (Marie et al., 2023) — NeuroImage: Reports
• Effects of a 1-year piano intervention on cognitive flexibility in older adults (Mack et al., 2025) — Psychology and Aging
• Quality of life in older adults is enhanced by piano practice (Worschech et al., 2025) — Annals of the New York Academy of Sciences
• The effects of skill on the eye-hand span during musical sight-reading (Furneaux & Land, 1999) — Proceedings of the Royal Society B
• Piano training enhances the neural processing of pitch (Nan et al., 2018) — PNAS
• Defining and investigating cognitive reserve, brain reserve and brain maintenance (Stern et al., 2020) — Alzheimer's & Dementia