scale
Ukulele fretboard diagram
C# ionian scale — ukulele chords and intervals
The harmonized C# ionian scale produces the same chord family as the major scale, forming the reference point for all diatonic harmony. Every chord built from this mode occupies a clear functional role: tonic, subdominant, or dominant. The diatonic chords of C# ionian are C#Maj7, D#m7, Fm7, F#Maj7, G#7, A#m7, Cm7b5. The I-vi-IV-V turnaround is a classic pop foundation, while the I-iii-vi-ii-V chain creates elegant descending-fifth motion ideal for standards and ballads. Commonly used in Pop, Classical, Folk, Country. Notable players include The Beatles, Bob Dylan, James Taylor.
The C# ionian scale has the following degrees: 1 2 3 4 5 6 7.
Intervals: W-W-H-W-W-W-H.
Diatonic chords: C#Maj7, D#m7, Fm7, F#Maj7, G#7, A#m7, Cm7b5.
| Degrees | Chord |
|---|---|
| I | C#Maj7 |
| ii | D#m7 |
| iii | Fm7 |
| IV | F#Maj7 |
| V | G#7 |
| vi | A#m7 |
| vii° | Cm7b5 |
Degree-by-Degree Analysis
The I chord (C#Maj7) is the tonic — the gravitational center of the key. The ii chord (D#m7) is the minor subdominant, commonly used to approach the V chord. The iii chord (Fm7) functions as a substitute for the I or vi. The IV chord (F#Maj7) is the subdominant — it adds motion and moderate tension. The V chord (G#7) is the dominant — it creates the strongest tension that wants to resolve to the I. The vi chord (A#m7) is the relative minor — it brings emotional color and depth. The vii° chord (Cm7b5) is the diminished — the most tense, rarely used alone, usually leading to the I.
This page focuses on the harmonic content — the chords built from each degree of the C# ionian scale. For fretboard patterns and fingering guides, see the scale page.
Use the interactive harmonizer above to explore triads, seventh chords, and chord voicings for composing with the C# ionian scale on ukulele.
ionian is the 1st mode of the Major scale. View C# Major scale
Related Scales
How to Use This Scale
Use over Maj7, Maj9, major triads. The default safe choice for any major-key context.