A# Lydian #9 Piano Scale
Piano scale diagram
A# Lydian #9 Scale — Notes and Intervals
The A# Lydian #9 scale is an exotic and aggressive variation of the Lydian mode. On Piano, the notes are A#, B##, D, E, F, G, A. It features a wide melodic gap that gives it a fusion edge, perfect for high-energy solos and modern jazz compositions that require a sharp, biting sound. Commonly used in Fusion, Modern Jazz, Progressive. Notable players include Allan Holdsworth, Brett Garsed. Use over 7#9#11 chords. A specialized fusion tool for adding a sharp, biting edge to Lydian-based lines.
Notes: A#, B##, D, E, F, G, A
Intervals: 1P, 2A, 3M, 4A, 5P, 6M, 7M
Degrees: 1 #2 3 #4 5 6 7
Formula: WH-H-W-H-W-W-H
Number of notes: 7
How to Play A# Lydian #9 on Piano
On piano, the A# Lydian #9 scale uses 2 black keys. Start with your thumb on A# and use the black keys as landmarks for consistent finger placement. Standard major or minor fingering patterns apply.
The A# Lydian #9 scale contains 2 sharps (A#, B##). Its relative minor is G minor, which shares the same notes.
Practice Routine
Set a metronome to 80 BPM and play the A# Lydian #9 scale in groups of four notes, shifting the starting note each repetition. This builds muscle memory across the entire scale range. After a week, try improvising short 4-bar phrases using only these notes.
Experiment with simple two-chord vamps rooted on A# to let the characteristic intervals of the Lydian #9 scale come through clearly.
Piano Tips
At the piano, try voicing the A# Lydian #9 scale in the left hand as blocked intervals (thirds or sixths) while the right hand plays the melody. This develops your harmonic ear and comping skills simultaneously.
The A# Lydian #9 scale contains 7 notes (A#, B##, D, E, F, G, A). Use the interactive piano diagram above to explore this scale on Piano.