Chord Inversions Explained
A chord inversion is the same chord with a different note in the bass. C major in root position is C E G; put the third lowest and you have first inversion (E G C); put the fifth lowest and you have second inversion (G C E). The notes never change, only their order does, and that simple rotation is the secret to smooth, easy-to-play chord changes.
Play chords in any inversion
The game accepts any voicing, so practise chords in every inversion. See a chord, play it, know instantly if you nailed it. No download, no signup. MIDI keyboard or microphone.
▶ Try ChordRunner Free Free in the browser - any inversion counts as correct.Root position, first, second inversion
Take any triad and you can put any of its three notes at the bottom. With the root lowest you are in root position, the most stable and familiar sound. Move the root up an octave so the third is lowest and you have first inversion, which sounds lighter and leans forward. Move again so the fifth is lowest and you have second inversion, floaty and a little unsettled. It is still the same chord every time, just re-stacked.
Turn a chord through its inversions
Pick a major triad and an inversion. The orange key is the bass, the lowest note that defines the inversion.
Why inversions matter
Inversions are the difference between lurching between chords and gliding between them. Play C then F in root position and your hand jumps; play C then F in second inversion (C F A) and only one finger moves. Choosing the inversion whose notes sit closest to the previous chord is called voice leading, and it is what makes an accompaniment sound connected and professional rather than blocky. Inversions also shape the bass line, which is where they meet slash chords: C in first inversion is exactly the slash chord C/E.
Inversions of bigger chords
The idea scales. A triad has three positions; a seventh chord like a dominant seventh has four, because there are four notes that could sit in the bass. The more notes a chord has, the more ways you can voice it, which is why extended chords give players so much freedom. Being fluent with inversions of the basic triads first, from chord training, makes the taller chords far less daunting.
Practise inversions in the game
Because ChordRunner's chord recognition accepts any voicing, you can play a chord in root position, first or second inversion and still be judged correct, so it is a natural place to practise them freely: challenge yourself to hit each target in a different inversion. When the exact bass note matters, switch to the slash-chord targets, which check the lowest note specifically. Free in the browser, nothing to install.
Common questions
What is a chord inversion?
A chord inversion is the same chord with a different note in the bass. Root position has the root lowest (C E G). First inversion puts the third lowest (E G C). Second inversion puts the fifth lowest (G C E). The notes are identical; only their order, and the lowest note, changes.
Why do chord inversions matter?
They let your hand move less and your bass line move smoothly. Instead of leaping to a new root position for every chord, you pick the inversion whose notes are closest to the last chord, which is called voice leading. It sounds more connected and is far easier to play.
How many inversions does a chord have?
One per note. A three-note triad has root position plus two inversions. A four-note seventh chord has root position plus three inversions, because there are four possible notes to place in the bass. Each inversion is just a rotation of the same notes.
How do I practise chord inversions?
Play the same chord in each inversion until any of them feels equally natural. In ChordRunner the chord recognition accepts any voicing, so you can play chords in any inversion and still be judged correct, and the slash-chord mode lets you drill a specific bass note when order matters.