Play over the changes. EarBop listens.
It writes the tones that belong under every chord. You play or sing them into the microphone and see at once what fits and what doesn’t.
Runs in the browser, no sign-up. Works offline too.
The same in notation
Switch to notation and every tone sits on the staff. A tone you play turns green. Miss it, and it turns red, shows what it heard, and waits until you fix it.
A live instrument, not MIDI
The melody is played by a real guitar and two saxophones, recorded note by note: several takes of every note, and three dynamics on the guitar. Hear the same phrase on each.
The backing is recorded too: double bass and Rhodes. A complete set of live drums is being recorded right now. For the moment they play swing at about 97–123 BPM; elsewhere the metronome keeps time.
Eleven drills over any tune
Every drill has its own settings. Start with guide tones on a II–V–I and add more once they sit.
- Root
- Guide tones
- Target Tone Lines
- Arpeggios
- Melodic structures
- Scales, including Barry Harris’s descending scale
- Pentatonics
- Upper structures
- Your own licks
- Walking bass
- Your own intervals
Readable from the stand
Focus mode shows two bars on the phone: the one playing now, big, and the next one below it. Chords and intervals read from two metres away.
Notation for the stand
- The whole drill in notation with the interval under every note, saved as PDF.
- Parts for B♭ and E♭ instruments, the band in concert pitch.
- Your own lick printed in all twelve keys.
For everyone who plays one line at a time
On first start you pick your instrument and the app sets the transposition, microphone and range for it: voice, guitar, piano, alto or tenor sax, trumpet, clarinet, trombone, double bass or bass guitar.

Who makes it
I make EarBop on my own. I’m a jazz guitarist and I wanted a practice tool that tells me whether I’m really playing what I think I’m playing. I recorded the guitar in the app myself; the saxophones were played by musicians I know. Tell me what you miss: I read every message sent from the app.
Price
The free version is a complete tool. The full version adds more ways to work.
Free
- All 37 practice tunes
- Root, guide tones, Target Tone Lines, arpeggios, walking bass – or just the band with no exercise
- Microphone, voice leading, transposition, B♭/E♭ instruments
- Loop, chord editing, focus mode, printing the changes, sharing, works offline
Full version
Launch price until 31 Dec 2026, then €24.
- Scales, pentatonics, melodic structures, upper structures, your own intervals
- Your own licks in all keys, several licks at once, substitutions
- Enclosures, your own order, the complete walking bass
- Improvise with the drill only on II–V–Is, dominants or chosen chords
- The whole drill in notation, iReal Pro import