F# Half-diminished Ukulele Arpeggio
Ukulele arpeggio — fretboard diagram
F# Half-diminished Arpeggio — Notes and Intervals
Notes: F#, A, C, E
Intervals: 1P, 3m, 5d, 7m
Formula: WH-WH-2W
Number of notes: 4
Also known as: m7b5, ø, -7b5, h7, h
The F# Half-diminished arpeggio contains 4 notes (F#, A, C, E). Use the interactive fretboard above to explore this arpeggio on Ukulele with different tunings and fret ranges.
When to Use the F# Half-diminished Arpeggio
Play the F# Half-diminished arpeggio whenever a F# Half-diminished chord appears in a progression. Unlike scales (which include passing tones), arpeggios guarantee every note you play IS a chord tone, making your solo sound harmonically precise and intentional.
Arpeggio vs. Scale
The F# Half-diminished arpeggio uses 4 notes (F#, A, C, E) while the full scale uses 7. The arpeggio is a subset — think of it as the skeleton of the scale. Practice alternating between the arpeggio and the full scale to develop a melodic vocabulary that mixes chord tones with passing tones.
How to Play F# Half-diminished Arpeggio on Ukulele
On ukulele, find F# around fret 5 and play through the arpeggio tones (F#, A, C, E). You may need to move beyond a single chord shape to reach all 4 notes. Practice connecting the arpeggio tones smoothly across adjacent fret positions.
The F# Half-diminished arpeggio creates a tense, unstable sound built from minor thirds. It works over F#dim, F#dim7, F#m7b5 chords and is often used as a passing device to create dramatic tension before resolving to a stable chord.
Practice Routine
Practice the F# Half-diminished arpeggio in different octaves, starting low and working up. Then try displacing the octaves — play the root low, the A an octave higher, and continue leaping. This trains your ear to hear the intervals (1P, 3m, 5d, 7m) in any register.
Ukulele Tips
The ukulele's re-entrant tuning creates natural voice leading within the F# Half-diminished arpeggio. Experiment with picking patterns that take advantage of the high G string to create unexpected interval leaps within the arpeggio shape.