A Suspended Fourth Bass Arpeggio
Bass arpeggio — fretboard diagram
A Suspended Fourth Arpeggio — Notes and Intervals
Notes: A, D, E
Intervals: 1P, 4P, 5P
Formula: 5-W
Number of notes: 3
Also known as: sus4, sus
The A Suspended Fourth arpeggio contains 3 notes (A, D, E). Use the interactive fretboard above to explore this arpeggio on Bass with different tunings and fret ranges.
When to Use the A Suspended Fourth Arpeggio
Play the A Suspended Fourth arpeggio whenever a A Suspended Fourth 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 Suspended Fourth arpeggio uses 3 notes (A, D, 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 A Suspended Fourth Arpeggio on Bass
On bass, locate A on the E string at fret 5. This compact 3-note arpeggio (A, D, E) can be played across two strings without shifting, making it ideal for building bass lines that clearly outline the harmony.
The A Suspended Fourth arpeggio avoids the third, creating an open, unresolved sound. It works over Asus4, Asus2, A7sus4 voicings and is perfect for creating a modern, ambiguous harmonic feel that neither commits to major nor minor.
Practice Routine
Practice the A Suspended Fourth arpeggio in different octaves, starting low and working up. Then try displacing the octaves — play the root low, the D an octave higher, and continue leaping. This trains your ear to hear the intervals (1P, 4P, 5P) in any register.
Bass Tips
On bass, use the A Suspended Fourth arpeggio as the skeleton for your bass lines. Target the root on beat 1, then use the other tones (D, E) on weaker beats to create movement while keeping the harmonic foundation solid.