Tools
Interactive tools for exploring music theory and piano.
Chord Finder
Find chords by name or by the notes you play.
Circle of Fifths
Explore keys, scales, and relative minors on an interactive wheel.
Practice Room
Live MIDI practice environment — chord drills, scale runs, open play with real-time analytics.
Chord Drill
Practice chords with MIDI or keyboard input. 10 chords per session with timed feedback.
Scale Drill
Practice scales with MIDI or keyboard input. SM-2 spaced repetition across major, minor, modes, and more.
Key Signature Quiz
Identify keys from their signatures. Tap the root, play it on MIDI, or sing into the mic. Major/minor, 3 difficulty tiers.
MIDI Monitor
Real-time MIDI diagnostic — raw bytes, notes, velocity, CC messages, pitch bend, and channel activity.
Interval Trainer
Train your ear and theory knowledge — identify intervals by sound, name, or keyboard position.
Note Reading
Practice reading notes on the treble and bass staff. Tap or play to answer.
MIDI Latency Calibration
Measure and save your MIDI round-trip latency so timing stays accurate at fast tempos.
Rhythm Drill
Tap or play rhythms in real time. VexFlow notation, progressive difficulty, and instant scoring.
Skill Diagnostic
Quick placement assessment — maps your strengths across 8 domains and recommends a starting level.
MIDI Gear Guide
USB keyboards and cables that work with piano.org. Browser compatibility, setup, and picks for every budget.