Eb Ionian

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

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

Swipe the neck sideways to see the higher frets.

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