The interval — the distance between two notes — is the building block of melodies and chords. If you can recognize intervals by ear, you can pick out melodies without sheet music, play more in tune and understand what you are playing.
How it works
In this game, you hear two notes and identify the interval. The level progression starts with clear contrasts, such as thirds and fifths, and refines your listening until it covers every interval within the octave — first melodic (notes in sequence), then harmonic (notes played together), which require separating the sounds inside a single attack.
Levels and free mode
There are 7 levels, from thirds to octaves; the first three are open and, from the fourth on, an account keeps your progress and puts you in the ranking. The start screen has a playable piano and a Hear an example button that walks through the level's intervals before you begin. Free mode lets you choose exactly which intervals to practice — handy for attacking the classic confusions, such as major third versus minor third.
Consistency
Ear training rewards regularity, not marathons: a few minutes a day build more than an hour once a week. The game runs in the browser, nothing to install.