Crescend

Record yourself playing. Get the feedback a great teacher would give you.


A teacher for every pianist.

Record yourself playing with your phone and get the feedback a great teacher would give you: how to clean up your pedaling, shape your dynamics, warm your tone.

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Grand piano seen from above

55%

More accurate

30+

Educator interviews

15s

To get feedback


Any app can check your notes.

But that's not what separates good playing from great playing. Your tone. Your dynamics. Your phrasing. That's always needed a teacher.


Sheet music resting on vintage piano keys

How It Works

Under 15 seconds from recording to feedback.

  1. 01

    Record yourself playing

  2. 02

    Upload your recording

  3. 03

    Get detailed feedback on what to improve


Close-up of classical piano score with dynamic markings

Sound Quality

Your dynamic range in measures 24-31 stays mostly at mezzo-forte where Chopin's marking calls for a gradual crescendo to fortissimo. Try exaggerating the build -- start softer, arrive louder.

Technical Control

Pedal changes in the lyrical section are clean, but running passages in bars 56-64 accumulate harmonic blur. Try half-pedaling through the chromatic descent.

Real Feedback

Chopin -- Ballade No. 1 in G minor

Not "good job" or a letter grade. Specific, actionable feedback on exactly what to practice.


Built on Research

Trained on thousands of hours of professional performances to hear what a great teacher hears. Published, peer-reviewed, and validated against real educator assessments.

55%

More accurate

30+

Educator interviews

Published on arXiv
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Ready to hear what your playing really sounds like?

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