Tested tool guide
Tested browser tools
Checked August 16, 2026
What Music Interval Trainer does, with a checked example
Plays a pair of notes and asks you to name the musical distance between them - major third, perfect fifth, and so on - then scores the answer and serves the next pair. You can focus a session on a subset of intervals, and the notes can be played one after another or together, upward or downward. The thing most first-timers get wrong is that an interval name carries two facts at once: the size (how far apart) and the quality (minor, major, or perfect). The ear has to catch both, and a missed answer usually collapsed them into one.
Worked example
A concrete input and expected output from the current implementation.
Input
The tool plays two notes, C4 and then G4. Answer submitted: Perfect fifth.
->
Expected output
Marked correct; the score increases by one. The played pair spans seven semitones, which is named the perfect fifth.
The tool generated the pair, so the answer key is fixed: C4 to G4 is seven semitones, and that distance is the perfect fifth. The submitted name matches the played notes, so the round is scored correct.