Interval Ear Trainer

Two notes play. You find both pitches by ear, on a music staff or piano keys, in the real sound of your own instrument. It's free, it runs in your browser, and there's no signup.

No account needed. Works on phone and desktop.

How it works

1. Pick your instrument (piano, guitar, strings, winds, or brass) and a difficulty.
2. Each round plays two notes, ascending or descending. It's a true 50/50, so you can't cheat by guessing the direction.
3. Enter both notes in the order they played, on a staff or a piano keyboard. Replay them as many times as you need. Nobody's counting.
4. A game is five rounds, and a round only counts when you get both notes right. A perfect game is 5/5.

Two ways to train

Not sure which to pick? Go with the level that matches where you are right now. In Interval names mode you hear two notes and pick the label ("major third", "perfect 5th"). That's the classic way to build interval vocabulary. Interval mode goes further: you locate both actual pitches, which is exactly what you do when you transcribe a melody or play by ear. If intervals are new to you, start with names. Once you can hear the notes themselves, naming them is the easy part.

Difficulty that grows with you

• Easy keeps every note inside an 8-note major scale.
• Medium opens up a full 13-note chromatic octave.
• Hard uses your instrument's entire range.
• And Custom lets you set your own range, say, just the octave you're working on this week.

Tips for learning intervals faster

• Start on Easy. The major scale limits the choices, so your ear gets to learn scale degrees before it has to wrestle with chromatic notes.
• Sing what you hear before you answer. If you can hum both notes, you've already done the hard part.
• Tie each interval to a melody you know, in both directions. The first two notes of a tune you can recall instantly make a reliable anchor.
• Practice a little every day instead of a lot once a week. Five-round games are short on purpose, and the app tracks your daily streak.

Anchor songs: your first handles on each interval

While your ear is still learning, borrow melodies you already know. Hum the first two notes of the Jaws theme: that's a minor 2nd. "Happy Birthday" opens with a major 2nd, "Here Comes the Bride" with a perfect 4th, Star Wars with a perfect 5th, and "My Bonnie Lies Over the Ocean" with a major 6th. Hear an unknown interval, check it against your mental jukebox, answer. We keep a full list of all twelve intervals, ascending and descending, on the songs for intervals page. And the good news? You won't need the anchors forever. After a few weeks of play, a perfect 5th just sounds like a perfect 5th. No Star Wars required.

Train on the instrument you play

If you play violin, your ear is tuned to violin overtones, not to sine-wave beeps. Interval recognition transfers fastest from a familiar timbre, so every exercise here sounds like a real instrument. Transposing players (clarinet, trumpet, saxophone, horn) answer in written pitch while the audio sounds at concert pitch, exactly the translation you already do on the bandstand. And when intervals start feeling easy, the daily challenge rotates you through intervals, chords, and single notes: one shared five-round puzzle per day, same questions for everyone.

Frequently asked questions

Is the interval trainer really free?

Yes, really. Every exercise, instrument, and difficulty is free. If it helps you, there's an optional donation link, but that's it.

Do I need an account?

No. You can play everything without signing up, and your stats and streak are saved on your device. An optional account adds public leaderboards.

Which instruments can I train on?

Over 20 real instrument sounds: piano, guitar, violin, viola, cello, double bass, flute, clarinet, saxophones, trumpet, trombone, French horn, tuba, and more. Transposing instruments are handled the way you'd hope: you answer in written pitch while the audio sounds at concert pitch.

Does it work on my phone?

Yes. It runs in any modern browser, and you can install it to your home screen as an app.

Train intervals now Start with interval names

Brand new to intervals? Start with what is an interval? and the anchor songs list, or follow the 10-minute daily routine.