A Lydian Bass Scale
Bass scale — fretboard diagram
A Lydian Scale — Notes and Intervals
The A Lydian scale is the fourth mode of the major scale and arguably the brightest sound in music theory. On Bass, the notes are A, B, C#, D#, E, F#, G#. It is known for its ethereal, dreamlike, and cinematic quality. Because it avoids the pull of the perfect fourth, it is a favorite for film composers wanting to evoke a sense of wonder or otherworldly space. The diatonic chords of A Lydian are AMaj7, B7, C#m7, D#m7b5, EMaj7, F#m7, G#m7. Commonly used in Film Scores, Progressive Rock, Fusion, Ambient, Dream Pop. Notable players include Joe Satriani, Steve Vai, John Williams, Hans Zimmer. Use over Maj7#11, Maj9 chords. Ideal for non-resolving major passages. Avoid when the music needs to feel grounded or resolved.
Notes: A, B, C#, D#, E, F#, G#
Intervals: 1P, 2M, 3M, 4A, 5P, 6M, 7M
Degrees: 1 2 3 #4 5 6 7
Formula: W-W-W-H-W-W-H
Number of notes: 7
Diatonic Chords
AMaj7 — B7 — C♯m7 — D♯m7♭5 — EMaj7 — F♯m7 — G♯m7
How to Play A Lydian on Bass
On bass, locate A on the E string at fret 5. Use a one-finger-per-fret approach starting from the root and span two to three strings. Keep your fretting hand relaxed and practice shifting between positions cleanly.
The A Lydian scale contains 4 sharps (C#, D#, F#, G#). Its relative minor is F# minor, which shares the same notes.
Practice Routine
Set a metronome to 80 BPM and play the A Lydian 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.
Try these progressions with the A Lydian scale: AMaj7 - D#m7b5 - EMaj7 - AMaj7 (I-IV-V-I) or AMaj7 - B7 - D#m7b5 - EMaj7 for a more stepwise movement.
Bass Tips
On bass, use the A Lydian scale to build walking bass lines by targeting chord tones on strong beats and using scale tones as approach notes. This is the foundation of functional bass playing.
The A Lydian scale contains 7 notes (A, B, C#, D#, E, F#, G#). Use the interactive fretboard above to explore this scale on Bass with different tunings and fret ranges.
CAGED Positions & Patterns for A Lydian
The A Lydian scale can be played in 5 CAGED positions across the fretboard, each based on an open chord shape (C, A, G, E, D). As a 7-note scale, it also lends itself to 3-notes-per-string (3NPS) patterns that facilitate legato playing and diagonal shifting. Use the pattern selector above to isolate each position.