A 7b9 Chord on Terz Guitar

Play A 7b9 on Terz Guitar: diagrams, finger positions, intervals, and every voicing up and down the neck for this instrument.

The A 7b9 chord is an extended or altered dominant that stacks ninths, elevenths, thirteenths, or chromatic tensions over a dominant-seventh core. It is built from the notes A, Bb, C#, E, G. This page shows how to play A 7b9 on Terz Guitar with clear fretboard diagrams and suggested finger positions.

There is no open-string version on Terz Guitar: the lowest shape barres fret 2 and covers 3 frets. A falls on the G string. It sounds from A2 up to Bb4.

Terz Guitar is tuned G–C–F–A#–D–G, with 15 frets to work with. Guitar shapes work unchanged on terz guitar — finger them exactly as charted; every shape sounds a minor third higher than on guitar.

Browse alternate voicings to find the one that sits best under your fingers, then compare it with the other chord types built on A or explore the same shape in nearby keys. The diagrams list the notes in each voicing so you can connect the shape to the theory behind it.