A dim7 Chord on Terz Guitar

How to play the A dim7 chord on Terz Guitar: fretboard diagrams, finger positions, the notes that build it, and alternate voicings up the neck.

The A dim7 chord is a diminished chord built from stacked minor thirds, often used as a passing or leading chord. It is built from the notes A, C, D#, F#. This page shows how to play A dim7 on Terz Guitar with clear fretboard diagrams and suggested finger positions.

The C string ring open in the lowest shape, with the remaining notes fretted at fret 1 over a 2-fret stretch. The G string stays silent, so 5 of 6 sound. A falls on the G string. It sounds from C3 up to A4. 2 voicings are charted, the highest starting at fret 12.

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.