C-sharp Ionian scale

The C-sharp Ionian scale is a seven-note scale consisting of the notes C♯, D♯, E♯, F♯, G♯, A♯, and B♯. The scale is identical to the C-sharp major scale.

The C-sharp Ionian scale is a mode of the C-sharp major scale. It contains the same notes and starts on the first degree of the major scale.