F# Ionian

The F# Ionian mode (also written Gb) — F# G# A# B C# D# E# — shown across the guitar neck.

Also written Gb Ionian. Gb and F# are the same pitch — F# is the spelling in common use.

Swipe the neck sideways to see the higher frets.

F# 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, F# major, with F# marked as where Ionian begins, the same seven notes centered on F#.