How to Read Any Chord Symbol
Reading chord symbols is a two-step trick that never changes: first the root (the capital letter and any sharp or flat), then the quality (everything after it). Nothing means major, a lone m means minor, and numbers stack extra notes on top. Learn that grammar once and no symbol on a lead sheet, from a plain C to a C7b9#11, can stop you.
Turn symbols into notes, fast
The chord symbol appears, you play it, the game checks you at tempo. No download, no signup. MIDI keyboard or microphone.
▶ Try ChordRunner Free Free in the browser - every run is symbol-reading practice.The anatomy of a chord symbol
A chord symbol packs a lot into a few characters, but it always parses the same way. The root comes first: the capital letter, plus a sharp or flat if present. Then the quality: everything after the root. A bare letter is major. A lowercase m is minor. Then modifiers pile on, maj for a major seventh, dim, aug, sus, and numbers that stack thirds. Read in that fixed order, root then quality, and even a scary-looking symbol comes apart cleanly.
Decode a chord symbol
Tap a symbol to see it parsed and lit up on the keys.
Sevenths, extensions, alterations
The numbers are where symbols look scariest and are actually most logical. A plain 7 means a dominant seventh; maj7 means the natural seventh; higher numbers, 9, 11, 13, keep stacking thirds upward. Sharps and flats in front of a number alter that specific note, so 7b9 is a dominant 7th with a flattened ninth, an altered chord. Read the root, read the base quality, then apply each modifier in turn, and the longest symbol unwinds one piece at a time.
Slash chords and inversions
A slash tells you the bass note: C/E is a C chord with E on the bottom. If that bass note belongs to the chord it is simply an inversion; if it does not, it is a true slash chord adding a fresh bass colour. Either way the rule holds, chord on the left, bass note on the right, so slashes never break the two-step reading habit.
Practise reading symbols in the game
Reading a symbol slowly is easy; reading it fast enough to play is the real skill. In ChordRunner the chord symbol appears on screen and you have to turn it into notes in real time on your MIDI keyboard or microphone, across more than 25 chord types. Every run is symbol-reading practice at tempo, and the game tells you instantly when your reading was right. Free in the browser, nothing to install.
Common questions
How do you read chord symbols?
Read a chord symbol in two parts. First the root: the capital letter plus any sharp or flat. Then the quality: everything after it. Nothing means major, a lone m means minor, and numbers like 7, 9, 11, 13 stack extra notes on top. So Bbm7 is root Bb, quality minor seventh.
What does m, maj, dim, aug and sus mean in a chord?
They name the quality after the root. m is minor, maj (as in maj7) marks a major seventh, dim is diminished, aug is augmented, and sus means suspended, with the third replaced by the second (sus2) or fourth (sus4). A plain letter with nothing after it is major.
What does a slash in a chord symbol mean?
A slash names a bass note. C/E means a C chord with E in the bass. The part before the slash is the chord, the part after is the lowest note. If that bass note is already in the chord it is an inversion; if not, it is a true slash chord adding a new bass colour.
How can I get faster at reading chord symbols?
Practise turning symbols into notes at speed. In ChordRunner the chord symbol appears on screen and you play it in real time on a MIDI keyboard or microphone, so every run is symbol-reading practice at tempo across more than 25 chord types.