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SANTA CRUZ, Calif. — Have you ever had a song stuck in your head, playing on repeat like a broken record? This common phenomenon, known as an earworm or involuntary musical imagery (INMI), might be more than just an annoying side-effect of our music-filled lives. A new study suggests that these spontaneous mental concerts could reveal a hidden talent many of us possess without realizing it: a form of perfect pitch.
Perfect pitch, or absolute pitch, is the ability to identify or reproduce a musical note without any reference tone. It’s often considered a rare gift, believed to be present in less than 1 in 10,000 people. However, researchers at the University of California-Santa Cruz have uncovered evidence that a large proportion of the population may have access to absolute pitch information, as revealed through their earworms.
The study, published in the journal Attention, Perception, & Psychophysics, followed 30 college students over the course of a week, prompting them at random times to record any music playing in their heads. What they found was astonishing: nearly half of the recorded earworms were in the exact same key as the original songs, and over two-thirds were within one semitone (the smallest interval between notes in Western music) of the original key.
“What this shows is that a surprisingly large portion of the population has a type of automatic, hidden ‘perfect pitch’ ability,” says the study’s lead researcher Matt Evans, a Cognitive Psychology Ph.D. candidate at the University of California – Santa Cruz, in a statement.
To put this in perspective, imagine if you could hum the opening notes of your favorite song, and a musician with perfect pitch told you that you’d started in exactly the right key – without you even trying. That’s essentially what was happening with many of the participants in this study, even though none of them reported having perfect pitch.
The study offers the first evidence that absolute pitch memory is automatic and doesn’t require deliberate effort. Instead, accurate absolute pitch memory is revealed in spontaneously occurring musical imagery.
The research team used a clever method to capture these fleeting musical thoughts. Participants received text messages six times a day at random times, asking if they had any music playing in their heads. If they did, they were instructed to sing or hum the tune into their phones, trying to match the pitch and tempo of their mental music as accurately as possible.
These recordings were then compared to the original songs. The researchers found that 44.7% of the recordings were in the exact same key as the original song, and 68.9% were within one semitone of the original key. This is far more accurate than would be expected by random chance, which would predict only about 8.3% of recordings to be in the correct key.
Interestingly, this accuracy didn’t seem to depend on whether participants had recently heard the song or not. This suggests that our brains are storing and retrieving pitch information from long-term memory, rather than just holding onto recent sound experiences.
“Interestingly, if you were to ask people how they thought they did in this task, they would probably be pretty confident that they had the melody right, but they would be much less certain that they were singing in the right key,” notes Evans. “As it turns out, many people with very strong pitch memory may not have very good judgment of their own accuracy, and that may be because they don’t have the labeling ability that comes with true perfect pitch.”
The implications of this research are fascinating. It suggests that absolute pitch, far from being a rare talent, might be a latent ability in many of us – one that surfaces spontaneously in our idle musical thoughts. This could change how we think about musical memory and perception, and might even have implications for music education and therapy.
However, the researchers are quick to point out that this doesn’t mean everyone has the conscious ability to identify or produce specific pitches on command. Rather, it suggests that our brains are unconsciously encoding and reproducing absolute pitch information with surprising accuracy.
The study also sheds light on the nature of earworms themselves. Far from being annoying distractions, these spontaneous musical thoughts might be a window into the sophisticated musical processing our brains are constantly performing behind the scenes.
“Music and singing are uniquely human experiences that so many people don’t allow themselves to engage with because they don’t think they can, or they’ve been told they can’t,” adds Evans. “But in reality, you don’t have to be Beyonce to have what it takes to make music. Your brain is already doing some of it automatically and accurately, despite that part of you that thinks you can’t.”
The research opens up new questions about how we process and remember music. Why do our brains retain this level of detail? How might this unconscious pitch information influence our conscious experience of music? And could this latent ability be cultivated or brought into conscious awareness with training?
For now, the next time you find yourself humming along to an earworm, take a moment to appreciate the complexity of what your brain is doing. That annoying tune might just be showcasing your hidden musical talents.
Paper Summary
Methodology
The researchers used a method called experience sampling to study earworms in real-time. They recruited 30 college students and sent them text messages six times a day for two weeks. When participants received a message, they were asked if they had any music playing in their heads. If they did, they were instructed to record themselves singing or humming the tune.
These recordings were later compared to the original songs to measure how accurately participants reproduced the pitch. The study was divided into “Record” and “No-Record” weeks to check if the act of recording influenced the frequency of reported earworms.
Key Results
Out of 132 analyzable recordings, 59 (44.7%) were in the exact same key as the original song, and 91 (68.9%) were within one semitone of the original key. This is much higher than the 8.3% that would be expected by chance. At the individual level, 21 out of 24 participants who produced recordings had an average pitch error smaller than what would be expected by chance, with 12 participants showing statistically significant accuracy.
Study Limitations
The study had a relatively small sample size of 30 participants, all of whom were college students. This limits the generalizability of the results to broader populations. The researchers also note that their recruitment materials mentioned “musical imagery,” which may have attracted participants with more musical experiences or abilities. Additionally, the study relied on participants’ ability to accurately sing or hum the tunes in their heads, which could introduce errors not related to their mental representations of the music.
Discussion & Takeaways
This study provides novel evidence that a large proportion of the population may have access to absolute pitch information in their spontaneous musical thoughts. This challenges the notion that absolute pitch is a rare ability and suggests that our brains routinely encode and retrieve precise pitch information without conscious effort.
The findings have implications for our understanding of musical memory and perception, and could inform future research in music cognition and education. The study also highlights the potential of using earworms as a window into unconscious musical processing.
Funding & Disclosures
The study was conducted by researchers at the University of California, Santa Cruz. The authors reported no external funding sources and declared no conflicts of interest.
I’ve never considered myself to have absolute pitch. In school band and chorus, I envied the few I met who “had it”.
But I *almost always* have a tune in my head. Call it an “ear worm” or an internal jukebox, there’s always something playing in there!
I recently heard on CBC radio that the University of Surrey had developed an online training program that could teach absolute pitch to those who had some measure of musical ability. (https://www.surrey.ac.uk/news/adults-can-learn-absolute-pitch-new-research-challenges-long-held-musical-belief)
During the interview with Dr. Wong, they played three tones on a piano; I correctly “guessed” all three! So there may be help for me.
Regarding ear worms, something I’ve never heard or read before is that I can use my internal jukebox to control my mood.
When I’m feeling anxious, annoyed, fearful, or any number of unwelcome emotions, I pay attention to what’s playing on my internal jukebox, and I find I’m playing the same tune over and over — the classic “ear worm” perseveration.
At that point, I make a conscious choice to play some other internal tune, and I find that my mood improves immediately!
I’ve experimented with this, and it doesn’t have to be a happy or sad song before and after. It just has to be *different*.
Sometimes, people have asked me how I can remain calm during a crisis. I tell them it depends on life’s sound-track.