Ab Ionian

The Ab Ionian mode (also written G#) — Ab Bb C Db Eb F G — shown across the guitar neck.

Also written G# Ionian. G# and Ab are the same pitch, though spelling it from G# would need double accidentals (G# A# B# C# D# E# F##), which is why Ab is the name in use.

Swipe the neck sideways to see the higher frets.

Ab Ionian is the major scale — same seven notes, same order. The mode name describes which chord you treat as home, not a different set of notes.

The tool shows this from its parent key, Ab major, with Ab marked as where Ionian begins, the same seven notes centered on Ab.