Tonal Center

Tonal Center

A complete music theory reference and ear training platform — from fundamentals through chromatic harmony, with interactive exercises, score tracking, and tools for both students and teachers.

Use the tabs above to explore reference material, practice ear training, or track your progress.

A complete music theory reference — from fundamentals through chromatic harmony.
Chapters with interactive exercises are linked directly.

Part I — Elements of Music
Structured Curricula
Free
🎵
Ear Training Curriculum
Gated progression from pitch perception through seventh chord inversions. Exercises unlock as you demonstrate mastery.
9 levels · 40+ exercises
Premium
🎷
Jazz Ear Training
Extended harmonies, rootless voicings, tritone substitutions, and jazz melodic language — trained by ear.
Coming soon
Premium
🎓
AP Music Theory Prep
Targeted ear training for the AP exam: melodic and harmonic dictation, sight-singing, and aural analysis.
Coming soon
Practice Sandboxes Always free
🎹
Chord Recognition
Identify chord qualities and inversions by ear. Configure which chords to include.
Triads 7th chords Inversions
↕️
Interval Recognition
Drill any combination of intervals. Melodic, harmonic, ascending, descending.
All intervals Configurable
🎼
Note Identification
Identify notes on a keyboard in any key. Good for absolute pitch development.
Piano keyboard All keys
✍️
SATB Exercises
Fill in voices from a given bass or soprano line. Four-part writing practice.
Written Voice leading
📝
Bach Chorale Dictation
Transcribe voices from all 371 Bach chorales. Advanced harmonic dictation.
371 chorales Dictation
🔧
Full Trainer
All intervals and chords in one configurable tool. No gates, no sequence.
All-in-one Configurable
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