F# Dominant Flat Ninth Cavaquinho Arpeggio
Cavaquinho arpeggio — fretboard diagram
F# Dominant Flat Ninth Arpeggio — Notes and Intervals
Notes: F#, A#, C#, E, G
Intervals: 1P, 3M, 5P, 7m, 9m
Formula: 2W-WH-WH-WH
Number of notes: 5
Also known as: 7b9
The F# Dominant Flat Ninth arpeggio contains 5 notes (F#, A#, C#, E, G). Use the interactive fretboard above to explore this arpeggio on Cavaquinho with different tunings and fret ranges.
When to Use the F# Dominant Flat Ninth Arpeggio
Play the F# Dominant Flat Ninth arpeggio whenever a F# Dominant Flat Ninth 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# Dominant Flat Ninth arpeggio uses 5 notes (F#, A#, C#, E, G) 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# Dominant Flat Ninth Arpeggio on Cavaquinho
Locate F# on your instrument and play through the 5 notes of the Dominant Flat Ninth arpeggio (F#, A#, C#, E, G) slowly, ensuring each tone rings clearly before connecting them at speed.
The F# Dominant Flat Ninth arpeggio outlines a dominant seventh chord, creating the tension that wants to resolve. Use it over F#7, F#9, F#13 chords, especially in blues, funk, and jazz where dominant harmony drives the groove.
Practice Routine
Practice the F# Dominant Flat Ninth 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, 5P, 7m, 9m) in any register.
Cavaquinho Tips
Practice the F# Dominant Flat Ninth arpeggio on your instrument at a slow, comfortable tempo, focusing on clean articulation of each of the 5 tones before gradually increasing speed.