A# Dominant Flat Ninth Bass Arpeggio
Bass arpeggio — fretboard diagram
A# Dominant Flat Ninth Arpeggio — Notes and Intervals
Notes: A#, D, F, G#, B
Intervals: 1P, 3M, 5P, 7m, 9m
Formula: 2W-WH-WH-WH
Number of notes: 5
Also known as: 7b9
The A# Dominant Flat Ninth arpeggio contains 5 notes (A#, D, F, G#, B). Use the interactive fretboard above to explore this arpeggio on Bass with different tunings and fret ranges.
When to Use the A# Dominant Flat Ninth Arpeggio
Play the A# Dominant Flat Ninth arpeggio whenever a A# 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 A# Dominant Flat Ninth arpeggio uses 5 notes (A#, D, F, G#, B) 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 A# Dominant Flat Ninth Arpeggio on Bass
On bass, locate A# on the A string at fret 1. Span the 5 notes (A#, D, F, G#, B) across two to three strings using one finger per fret. Focus on even tone production between plucked strings and smooth position shifts.
The A# Dominant Flat Ninth arpeggio outlines a dominant seventh chord, creating the tension that wants to resolve. Use it over A#7, A#9, A#13 chords, especially in blues, funk, and jazz where dominant harmony drives the groove.
Practice Routine
Start by playing the A# Dominant Flat Ninth arpeggio ascending and descending at 60 BPM, one note per beat, using a metronome. Once even and confident, play it in eighth notes, then triplets, keeping each note articulate. Spend at least 5 minutes daily on this before moving to musical application.
Bass Tips
On bass, use the A# Dominant Flat Ninth arpeggio as the skeleton for your bass lines. Target the root on beat 1, then use the other tones (D, F, G#, B) on weaker beats to create movement while keeping the harmonic foundation solid.