Perfect Pitch vs Relative Pitch: What Each One Does
Perfect pitch is the ability to name or sing a note with no reference at all: you hear a single note and know it is a G, the way you know a colour is red. Relative pitch is the ability to hear how notes relate to each other, meaning how far apart they are, which way the music moved, and which note feels like home, so that once you are given one note you can work out the rest. Perfect pitch is rare and seems to depend on exposure in early childhood. Relative pitch can be trained at any age, and it is the one that does almost all of the work when people play, sing or write music.
What is perfect pitch?
Perfect pitch, also called absolute pitch, is a fixed memory for the notes themselves. Someone who has it can name a note played on its own, or sing a requested note out of silence, without hearing anything first. The name arrives on its own; nothing is being worked out.
It answers one question: which note is this? It does not, by itself, answer the questions music mostly asks, such as whether a chord is major or minor, or whether a melody has come home.
What is relative pitch?
Relative pitch is hearing notes in relation to one another. It covers several things at once:
- Direction: did the second note go up, down, or stay the same?
- Distance: how far apart are the two notes? That distance is an interval: a semitone, a major third, a perfect fifth.
- Function: how does a note or a chord sit in the key? Is it home, or does it pull towards home?
Relative pitch needs a starting point. Tell a musician with good relative pitch that the first note is a C, and they can name the notes that follow. Without that starting point, they can still tell you the shape of a melody exactly, but not which notes it is on.
The difference in one example
Take “Happy Birthday” in C major. Its first phrase is G, G, A, G, C, B.
Someone with perfect pitch hears those six names.
Someone with relative pitch hears the shape: a repeated note, one step up, one step back down, a leap up a fourth to the home note, then down a semitone. They hear the tune start on the fifth note of the scale and land on home at “to”. Sing the song starting on any other note and the shape is exactly the same, which is why everyone recognises “Happy Birthday” in whatever key a room happens to start it.
That last point matters. Recognising a tune you know when it is sung higher or lower is relative pitch, and nearly everyone does it without thinking. Relative pitch is not a rare gift. The untrained version is something most people already have; training gives the relationships names and makes them fast.
Which one helps in real musical situations?
Tuning an instrument
Perfect pitch lets you get an instrument near standard pitch with no tuner and no reference note. Relative pitch alone can tune an instrument to itself, string against string, but needs one reference, a tuner or another instrument, to land on the same pitch as everyone else.
The fine part of tuning is comparison for everyone. When two strings are almost the same pitch you hear a slow wobble in the sound, called beats, which slows down and disappears as the pitches meet. Listening for that is relative work, with or without perfect pitch.
Figuring out songs by ear
Perfect pitch hands you the first note immediately. Relative pitch finds it by trying, which takes seconds, and then every note after it is a distance from the one before. The work of playing by ear (the key, the chords, the leaps in the melody) is relative work whichever ear you have.
Singing in a choir
Choir singing is relative. Each singer holds a part against the others: a third above the melody, a fifth below the top line, in tune with the people around them. A singer with perfect pitch can find a starting note without a pitch pipe. An unaccompanied choir can also drift in pitch over a long piece, and a singer with perfect pitch may notice it, but the right thing to do is still to stay with the choir, which is a relative skill.
Transposing
Transposing means playing the same music starting on a different note. With relative pitch it is natural, because a melody is a pattern of intervals and the pattern does not change. A guitarist with a capo on the second fret plays a G shape and it sounds as A; the shape, the intervals and the song are the same. Some people with perfect pitch find transposing uncomfortable, because the names they hear and the names they play no longer agree.
Improvising
Improvising is hearing where you are in the key and where the music is about to go: that the chord on the fifth degree pulls towards home, that a note clashes with the chord under it, that the next phrase should answer the last one. All of that is relationship. It is why many improvisers think in scale degrees and chord numbers rather than fixed note names, and why session musicians use the Nashville number system, which writes chords as numbers in the key so a band can play the same chart in any key.
Why do almost all musicians rely on relative pitch?
Because music is made of relationships. A song moved to a new key is the same song. A chord progression keeps its effect in every key. Scale degrees, intervals, chord numbers and movable-do syllables, the tools musicians use to talk about what they hear, all describe how notes relate, not which notes they are.
Most working musicians do not have perfect pitch, and they play by ear, sing in tune, transpose and improvise without it. Musicians who do have perfect pitch use relative pitch too, because naming every note is not the same as hearing what the notes are doing together.
How can you tell which one you have?
Assume relative pitch: almost everyone has some. The test is for perfect pitch, and it only works if it is honest.
- Clear the reference. Do it when you have not just been playing, singing along or listening to music, so no note is still in your ear.
- Have someone else play single notes on a keyboard or an app, in random order, across different octaves, out of your sight. If you can, change the instrument sound halfway through.
- Name each note at once and write it down. No humming a song first, no counting from the last note.
- Check only at the end. If you are told each answer as you go, every note becomes a reference for the next, and you are testing relative pitch.
Read the result honestly. Perfect pitch looks like fast, nearly always correct answers across octaves and instrument sounds, without working anything out. Guessing alone gets about one note in twelve right. If your answers are all wrong by the same distance, you made one wrong first guess and then followed the intervals correctly from it: that is relative pitch working well, not perfect pitch working badly. Being able to start a favourite recording close to its original key is common too, and it is not the same thing as naming any note on demand.
For relative pitch, the honest test is the skill itself. Hear two notes and say how far apart they are. Hear a note and sing it back. If those are slow or unreliable, that is the normal starting point, and it is the part that trains.
Can you train relative pitch, or learn perfect pitch instead?
Relative pitch can be trained at any age, on any instrument, with an ordinary ear. It improves on the timescale of a physical skill: weeks, unevenly, through short daily practice. Whether an adult can acquire perfect pitch is a separate question with its own article on this site; the short answer is almost certainly not, and it is not the skill that playing by ear depends on.
Where to start
The ear training lesson explains what relative hearing is and why intervals come before chords. The intervals by ear exercise plays two notes and asks how far apart they are, which is relative pitch in its smallest form. The lesson on singing a note back, and the one on singing intervals, turn hearing into producing: the site plays a note, or two at once, and listens while you sing them back.