Music Theory
Everything pianists need to understand how music works — chords, scales, intervals, harmony, jazz voicings, and the basics of the instrument itself. Use the navigation below to jump straight to what you’re working on.
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Interactive Beginner Guides
Long-form interactive lessons that explain piano fundamentals — not just what things are, but why.
A 12-section interactive guide — the 12-note keyboard, Middle C, the 88-key layout, then inside the case: the action and hammers, copper-wound bass strings, the soundboard, the three pedals, why pianos have exactly 88 keys, and the differences between grand, upright, and digital pianos.
Read the guide →11 structural patterns baked into the piano's design — the 2+3 rule, the 12-note loop, chord shapes, pentatonic black keys, the circle of fifths, and more. Interactive keyboards with audio.
Read the guide →7 patterns that explain why diminished chords are one of the most powerful symmetry tricks in music — clock face, elevator, three families, inversions, dominant disguise, four resolutions, and the diminished scale. Interactive widgets with audio.
Read the guide →All 88 keys of a standard piano — 52 white and 36 black. Interactive keyboard diagram, octave numbering, Middle C, and the grand staff explained.
Read the guide →The complete guide to intervals — half-steps, perfect/major/minor/augmented/diminished quality, ear training quiz, inversions, compound intervals, and a full reference table. 9 interactive widgets.
Read the guide →How treble and bass clefs join to cover the full 88-key range. Middle C as the bridge between staves, ledger lines, octave registers, and tips for sight-reading the grand staff.
Read the guide →Foundations
Core Concepts
The eight building blocks every pianist returns to — intervals, chords, scale degrees, key signatures, and how the keyboard maps to notation.
Explore the distance between any two notes. See how intervals build harmony, understand semitone counts, and hear how each one sounds.
Explore →△TriadsBuild major, minor, diminished, and augmented chords from three notes. See the intervals and formulas that define each triad quality.
Explore →ⅰScale DegreesUnderstand the role of every note in a scale — tonic, dominant, leading tone and more — using Roman numerals and solfege.
Explore →○Circle of FifthsSee how all 12 keys relate through perfect fifths. Understand key signatures, relative majors and minors, and navigate between keys with confidence.
Explore →♯Key SignaturesLearn how sharps and flats define every major and minor key. See the order of sharps and flats, understand enharmonic equivalents, and master key signature identification.
Explore →=Enharmonic EquivalentsLearn why C♯ and D♭ are the same piano key but different note names. Explore all 15 enharmonic pairs, understand when each spelling is used, and test yourself with an interactive quiz.
Explore →⇌Relative KeysTwo keys, identical notes, different home bases. Understand how every major key pairs with a relative minor — and how this unlocks key changes, scale reuse, and harmonic connections.
Explore →♩Piano NotesLearn the names of every key on the piano — white keys, black keys, sharp and flat names — plus how to read notes on the treble and bass clef. Full interactive guide with audio.
Explore →Chord Mastery Series
Chords, in Order
The full chord curriculum, from what a chord actually is through every extension and alteration. Work through it in order or jump to any topic.
Scale Mastery Series
Scales & Modes
Major and minor scales, the seven modes, pentatonic and blues, and the exotic scales pulled from world music — each with playable diagrams.
Intervals Deep Dive
Every Interval, in Depth
Beyond the overview — perfect vs. imperfect quality, compound intervals, the tritone, and how interval patterns change across every mode.
Harmony & Progressions
How Chords Move
Cadences, Roman-numeral analysis, and transposition — the tools you need to read, write, and move between keys.
Authentic, plagal, half, deceptive, and Phrygian half cadences — what each one sounds like and where you hear them. Includes a 12-question quiz and a chord progression player.
The universal language for chord progressions. Read I–IV–V–vi in any key, understand inversions and secondary dominants, and learn why every standard you love uses the same handful of numbers.
How to move a piece from one key to another — intervals, semitones, and the circle of fifths in action. Step-by-step examples and quick mental tricks.
How music moves between keys mid-piece. Pivot chord, direct, and sequential modulation — with audible examples from Mozart, Whitney Houston, and Beethoven.
Jazz Voicings
How the Pros Spread Chords
The classic vocabulary of jazz piano comping — Bill Evans rootless shells, Drop 2, Locked Hands block chords, quartal stacks, So What voicings, stride, and Upper Structure triads.
Piano Basics & How-Tos
Getting Started
Practical answers for new pianists — reading sheet music, practicing well, choosing an instrument, and avoiding the common beginner traps.
Treble and bass clefs, note values, rests, time signatures, and the basics of reading rhythm.
How to Practice PianoDeliberate practice, slow practice, chunking, and the routines that actually move the needle.
Learning Piano as an AdultWhy adult learners succeed (and where they get stuck) — realistic timelines and what to focus on first.
Self-Taught vs. TeacherThe tradeoffs of going it alone, finding a teacher, and how to blend both for the best progress.
Beginner Piano SongsSongs that sound impressive but are within reach for true beginners — with the chord shapes you need.
Common Beginner MistakesPosture, fingering, rhythm, and practice-habit pitfalls — and how to avoid them.
Digital vs. AcousticWeighted keys, action, sound, maintenance, and price — how to choose the right instrument for you.
Best Beginner Keyboards88-key weighted action picks for the first instrument, with honest tradeoffs at each price point.
More Theory & Reference
Quick Answers & Curated Reading
Fast, scannable answers to the most common piano and music theory questions — keys, chords, scales, intervals.
A curated collection of verified quotes about piano, practice, performance, and teaching — from Chopin and Liszt to Horowitz, Argerich, and Lang Lang.
Universal practice principles every musician should know — deliberate practice, muscle memory, slow practice, and 13 more strategies that transform how you practice.
A hundred surprising facts about pianos, pianists, composers, and the instrument itself — history, mechanics, lore, and trivia.
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