Scale Recognition Trainer
A play-and-guess ear-training game. Press Play to hear a scale built on a random starting note, played ascending then descending, then tap the scale you think it is. Start with major and the three minors (natural, harmonic and melodic), then add pentatonic and blues, and finally add the remaining modes — Dorian, Phrygian, Lydian, Mixolydian and Locrian (the other two modes are already covered, since Ionian is the major scale and Aeolian is the natural minor scale). After each answer the tool highlights the characteristic degrees that give each scale its sound.
ℹ This is an uncalibrated practice aid that depends on your ears, your headphones and a quiet room — it is not a test, certification or diagnosis. The pitches are exact in 12-tone equal temperament with A4 = 440 Hz, so the theory is precise; words like “bright” or “dark” for a scale’s mood are conventional and subjective. Your score is a personal progress metric stored only in this browser — nothing is recorded or uploaded. Use a moderate volume.
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How It Works
Every scale is just a recipe of steps. Starting from a root note, you move up by whole tones (2 semitones) and half tones (1 semitone) in a fixed pattern. A major scale follows the pattern 2–2–1–2–2–2–1; a natural minor follows 2–1–2–2–1–2–2. Each round, the trainer picks a random root somewhere comfortable in the middle of the keyboard, applies the chosen scale’s step pattern, and synthesises the notes one after another (and back down) on the Web Audio clock with a soft click-free envelope. Because the root changes every time, you cannot memorise absolute pitches — you are forced to learn each scale’s shape, which is exactly what relative-pitch training is about.
The pitch of every note is computed with the standard equal-temperament formula f = 440 × 2^((m−69)/12), where m is the MIDI note number and 69 is A4 = 440 Hz. That makes the intervals mathematically exact in 12-tone equal temperament. What is not exact is the vocabulary we use to describe how a scale feels — Lydian sounds “floating”, Phrygian sounds “Spanish” or “dark”, the blues scale sounds “bluesy” — those are useful conventions, not measurements, and they vary by listener and culture.
The fastest way to improve is to focus on the one or two notes that distinguish similar scales. Major and minor differ mainly in the third (a major third is bright, a minor third is sombre). Dorian is a minor scale with a raised sixth; Mixolydian is a major scale with a flattened seventh; Lydian is a major scale with a raised fourth; the harmonic minor adds a dramatic raised seventh that creates a wide gap before the octave. After every answer this tool names and highlights those characteristic degrees so you learn what to listen for next time.
Frequently Asked Questions
Which scales does the trainer cover?
Twelve distinct scale sounds (Aeolian is the same scale as natural minor, so they share one button): the major scale (Ionian); natural, harmonic and melodic minor; major and minor pentatonic; the (minor) blues scale; and the modes of the major scale — Dorian, Phrygian, Lydian, Mixolydian and Locrian (Ionian is the major scale and Aeolian is the natural minor scale). Difficulty Level 1 covers major plus the three minors (natural, harmonic and melodic), Level 2 adds the pentatonics and blues, and Level 3 adds the remaining modes (Dorian, Phrygian, Lydian, Mixolydian and Locrian).
Is the tuning accurate?
Yes. Notes are generated in 12-tone equal temperament with A4 fixed at 440 Hz, using f = 440 × 2^((MIDI−69)/12). The intervals are therefore mathematically exact. Only the descriptive words for each scale’s mood (“bright”, “dark”, “floating”) are conventional and subjective, not measured quantities.
Is my score a real test of musical ability?
No. This is an uncalibrated practice aid. Your result depends heavily on your headphones or speakers, background noise, and how the synthesised tones sound on your device. Treat the score as a personal progress metric to beat over time — not a certification, audiogram, or diagnosis of anything.
How is the difference between similar scales explained?
After you answer, the tool reveals the correct scale, draws its degree pattern, and names the characteristic intervals that set it apart — for example the raised 6th of Dorian, the flat 7th of Mixolydian, or the raised 7th of harmonic minor. Focusing on those one or two “tell” notes is the quickest route to recognising scales reliably.
Where is my progress stored, and is anything uploaded?
Nothing is recorded or uploaded — the audio is generated locally and only plays out of your speakers. Your score, streak and accuracy are saved in your browser’s local storage on this device only, and your per-round results also feed the Audio Skills Progress Tracker. Clearing your browser data or using private/incognito mode erases everything. The Reset button clears only this page’s score, streak and accuracy — it does not erase your history in the shared Audio Skills Progress Tracker.