Perfect pitch

How it works

Most trained musicians have relative pitch. They can name a note once they hear another note to compare it with. A person with absolute pitch, usually called perfect pitch, needs no comparison. They hear a car horn and know it is an F. They can sing a B flat on request¹.

The ability is not better hearing. The ears are the same as anyone else’s. The difference is in the brain. Every pitch is stored with a label, in the way most people store the colour red with the word “red”¹. Brain scans point to the planum temporale, a part of the auditory cortex. In musicians with the ability, this region is more uneven, with the left side larger than the right⁴.

Perfect pitch has a strong genetic component. It runs in families⁵, and one or more genes may be involved¹. Genes are not enough on their own. Early training matters. In one survey, about 40% of musicians who began lessons at age 4 or younger said they had it, against 3% of those who began at age 9 or older⁵. Speakers of tonal languages such as Mandarin have higher rates, possibly because they learn to attach meaning to pitch from infancy².

About 20% of people with perfect pitch also have synesthesia¹. That is about five times the general rate of roughly 4%³. Rates are also higher in autistic people¹.

How common it is

The rate in the general population is not known. A figure of 1 in 10,000 is often quoted, but it may not be accurate¹. Among music students the rate is at least 4%¹. Whether adults can learn it is debated. Most training gives only a weaker, learned form. In a 2019 study, two of six adults trained to the level of people with lifelong perfect pitch¹.

Is it a problem?

No. Perfect pitch is not a disorder and causes no harm on its own. Some people with it find it mildly annoying, because out-of-tune music, or a song played in a different key from the recording, can sound wrong or grating¹.

There is nothing to check with a doctor about having perfect pitch itself. It is worth mentioning new difficulty telling pitches apart to a doctor, since that is a hearing change, unrelated to this trait.

History and culture

Mozart is an early recorded case of a very fine ear. In a letter from 1792, the family friend Johann Andreas Schachtner describes Mozart at about age 7. The boy said that Schachtner’s violin was tuned “half a quarter of a tone” lower than his own. It was checked, and he was right⁶.