A# Dominant Ninth Bass Arpeggio
Bass arpeggio — fretboard diagram
A# Dominant Ninth Arpeggio — Notes and Intervals
Notes: A#, D, F, G#, C
Intervals: 1P, 3M, 5P, 7m, 9M
Formula: 2W-WH-WH-2W
Number of notes: 5
Also known as: 9
The A# Dominant Ninth arpeggio contains 5 notes (A#, D, F, G#, C). Use the interactive fretboard above to explore this arpeggio on Bass with different tunings and fret ranges.
When to Use the A# Dominant Ninth Arpeggio
Play the A# Dominant Ninth arpeggio whenever a A# Dominant 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 Ninth arpeggio uses 5 notes (A#, D, F, G#, C) 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 Ninth Arpeggio on Bass
On bass, locate A# on the A string at fret 1. Span the 5 notes (A#, D, F, G#, C) 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 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
Play the A# Dominant Ninth arpeggio as whole notes over a backing track or drone on A#. Focus on intonation and tone quality for each of the 5 notes (A#, D, F, G#, C). After a few passes, begin improvising short melodic phrases built from these arpeggio tones, connecting them with passing notes.
Bass Tips
Practice the A# Dominant Ninth arpeggio on bass using a raking technique across adjacent strings for a smooth, flowing sound. Then try the same shape with a two-finger alternating pluck for a more defined, punchy articulation.