Chord Structure Mapper: open and closed voiced chords

Open voiced chords start from the E string. Closed voiced chords start from the A string.

Pick a root and chord family, then switch between the actual chord structure, the full chord tones, or a broader related note pattern.

Choose the chord family and voicing layout

Open voicing uses E-string-root logic. Closed voicing uses A-string-root logic. That keeps the structure aligned with the diagrams you uploaded. :contentReference[oaicite:4]{index=4} :contentReference[oaicite:5]{index=5}

What you are seeing

Main notes in this structure

These are the notes emphasized in the selected chord family.

Why this matters

Selected structure and companion structure

The active card shows the chosen voicing family. The companion card shows the opposite voicing family for the same chord type and root.

Active structure

Open shape

Companion structure

Closed shape

Play this now

Start with the chord structure itself, then expand outward into chord tones or the broader pattern.

4-String fretboard map

Chords view shows only the selected structure. Chord Tones view highlights the full chord-tone family. Scale Pattern view shows the broader associated pattern.

Root
3rd / ♭3
5th / ♭5
7th / ♭7
Other pattern tone