Piano Bench Lab

Chord Verify

Play and hold the chord.

Matched

Missing

C E G

Extra

Waiting for notes. Doublings and octaves are fine.

0 Correct

0 Attempts

0% Accuracy

Session

Drill mode

Chord groups

Scale groups

MIDI

Web MIDI works best in desktop Chrome or Edge over HTTPS. The on-screen note buttons let the drill run anywhere.

Flow

Auto-advance after a correct answer

Advance delay, seconds

Include flat roots Include sharp roots

How it checks

Chord mode compares pitch classes, so any octave or doubling is accepted. Scale mode listens to the sequence of note-on events and checks the ascending one-octave spelling by pitch class.