A# Suspended Fourth Flat Ninth Guitar Arpeggio
Guitar arpeggio in 8-string tuning — fretboard diagram
A# Suspended Fourth Flat Ninth in 8-string — Notes and Intervals
Notes: A#, D#, F, G#, B
Intervals: 1P, 4P, 5P, 7m, 9m
Formula: 5-W-WH-WH
Number of notes: 5
Tuning: 8-string (F#-B-E-A-D-G-B-E)
Also known as: b9sus, phryg, 7b9sus, 7b9sus4
The A# Suspended Fourth Flat Ninth arpeggio contains 5 notes (A#, D#, F, G#, B). Use the interactive fretboard above to explore this arpeggio on 8-string guitar — 8-string with different tunings and fret ranges.
About 8-string Tuning
The 8-string guitar adds both a low B and a low F# string (F#-B-E-A-D-G-B-E), pushing the instrument's range almost into bass guitar territory. This massive tonal range has become the weapon of choice for djent, progressive metal, and experimental composers who need bone-crushing low-end and soaring highs in a single instrument.
With artists like Tosin Abasi, Meshuggah, and After the Burial leading the charge, the 8-string guitar has redefined what's possible in modern heavy music. The low F# string delivers subsonic heaviness that you can feel in your chest, while the upper strings maintain standard guitar voicings for leads and clean passages. Extended-range compositions often exploit the full span of the instrument, creating a wall of sound that covers bass, rhythm, and lead guitar roles simultaneously.
Notable artists: Meshuggah, Animals as Leaders, After the Burial, Intervals, Monuments
Best for: Djent polyrhythms, extended-range metal riffs, experimental compositions, and one-instrument arrangements spanning bass to lead
Explore This Arpeggio in Other Tunings
- A# Suspended Fourth Flat Ninth in Standard Tuning
- A# Suspended Fourth Flat Ninth in Drop D
- A# Suspended Fourth Flat Ninth in DADGAD
- A# Suspended Fourth Flat Ninth in Open G
- A# Suspended Fourth Flat Ninth in Baritone (B Standard)
- A# Suspended Fourth Flat Ninth in 7-string
- A# Suspended Fourth Flat Ninth in Drop C
- A# Suspended Fourth Flat Ninth in Drop B
- A# Suspended Fourth Flat Ninth in Open D