Chord Trees: see and hear piano and guitar chords
Chord Trees shows every chord as a tree on a piano keyboard and a guitar fretboard, so you can see how it is built, how it inverts and where to place your fingers. Press a chord to hear it with real piano, guitar, strings or brass sounds, loop it as an arpeggio, and train your ear.
It also turns a melody into chords that fit it, and lets you explore the seven modes of a scale. Free in your browser, nothing to install.
Frequently asked questions
What is Chord Trees?
Chord Trees is a free web app that shows chords as tree diagrams on a piano keyboard and a guitar fretboard and plays them with real instrument sounds. It helps you see how chords are built and hear how they sound.
Who is Chord Trees for?
It is for piano and guitar students, self-taught players and teachers who want to understand chords, inversions and harmony. Beginners can start with simple triads, and more advanced players can explore seventh chords and the seven modes.
Is Chord Trees free, and does it need an account?
Yes, it is free to use and no account is needed. Open the page in a browser and start exploring.
Does Chord Trees show guitar chord fingerings?
Yes. The guitar fretboard view shows Open, Barre and Alternative voicings for all 12 roots and 9 chord types: major, minor, diminished, augmented, major 7, minor 7, dominant 7, sus2 and sus4.
Who made Chord Trees?
Chord Trees was made by Nathaniel School of Music, the school founded by Jason Zac in Bangalore, India.