Circle of fifths
The twelve major keys with their relative minors, and a map of how you get from one key to another.
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Ear training
Recognise intervals and chords by ear. Four levels, keyboard answers, a session score with accuracy per type.
Free, in the browser, no account
This session
- Answers
- 0
- Accuracy
- 0%
- Streak
- 0
- Longest streak
- 0
Applies to this tool and this visit.
Keys 1 to 9 answer. At interval level 4 there are twelve answers, so the last three are reached with Tab. Once you have answered, Enter moves on.
The starting note changes with every question and sits between G3 and G5. That is the register where the ear tells pitches apart best.
Chords in root position, no inversions. The score stays in memory: closing the page clears it.
Everything happens in your browser. Nothing is sent or stored.
How it works
- Choose whether to recognise intervals or chords, the level, and how they should sound.
- Press Play: it starts from a different note on every question.
- Answer with a click or with keys 1 to 9. If you get it wrong you can hear your answer and the right one on the same root.
What it does
It plays an interval or a chord and asks you which one it was. It keeps count of your answers, your accuracy and your run of consecutive right answers, and tells you which types you get wrong most.
The levels
Intervals start at three answers and reach twelve:
1 — major 3rd, perfect 5th, octave. 2 — plus minor 3rd and perfect 4th. 3 — plus major and minor 2nd, major and minor 6th. 4 — all of them, tritone included.
Chords start at two and reach eight:
1 — major and minor. 2 — plus diminished and augmented. 3 — plus dominant 7th and minor 7th. 4 — plus major 7th and half-diminished.
A level never takes anything away from the one before it.
How it sounds
Melodic going up, melodic going down, or harmonic. For a chord, melodic means arpeggiated.
The starting note changes with every question and sits between G3 and G5. That is the register where the ear tells pitches apart best: lower down the thirds blur together, higher up the seconds spread. An exercise pitched badly teaches you the register instead of the interval.
On answering from the keyboard
Keys 1 to 9 answer, and the digit is printed on the button.
At interval level 4 there are twelve answers, so the last three carry no digit: you reach them with Tab, like everything else. Once you have answered, Enter moves on to the next question.
On the score
Accuracy per type counts how often an interval came up, not how often you named it. That is the difference between a fact and a grade: someone who always answers “major 3rd” would score a hundred per cent on the other count, because that entry would only ever be counted when they were right.
The list runs weakest first, which is the only reading that tells you what to do next.
Intervals and chords keep two separate scores: they are two exercises, and adding them up would give a number that describes neither. Changing level clears nothing — that is the same session.
What is not here
Chords sound in root position, no inversions: asking “major” about a first inversion is asking two things at once, and this page asks one.
No key recognition and no progressions: those are a different exercise.
On your data
Everything happens in your browser. The score stays in memory and goes when you close the page: nothing is stored and nothing is sent. The only thing that outlives the page is the volume, for this visit.
From here you also go here
Guitar amplifier
Plug the guitar in and play in the browser. Three channels, tone, a simulated cabinet and a recording you can play back and download.
Find the key
Switch on the notes you played and get the keys that contain them, ranked, with the notes left outside and the ones you have not touched yet.