F# Lydian Mode
F#–G#–A#–B#–C#–D#–E# · root also written Gb
F# Lydian is the 4th mode of the Db major scale: F#–G#–A#–B#–C#–D#–E#. Its character: dreamy, floating, and ethereal — major with a mystical quality.
The raised 4th (#4) is the only difference from major. This one note eliminates the only 'avoid note' in the major scale, making everything sound open and weightless. On guitar, target the raised 4th (B#) in your phrases — landing on it against the root is what makes a line sound Lydian instead of plain major.
Because every mode of Db major shares the same seven notes, any Db major fretboard shape works for F# Lydian — what changes is the note you resolve to. Loop a F# vamp or a backing track that stays on F#, keep resolving your phrases to F#, and the Lydian color comes through. You'll hear this sound in rock and jazz.
F# Lydian is mode 4 of Db Major — same seven notes, resolved to F# instead.
F# Lydian on the Fretboard
Standard tuning, frets 0–12. Every dot is a note in the mode — blue dots are the root (F#).
Notes and Intervals
| Interval | R | 2 | 3 | #4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|
| Note | F# | G# | A# | B# | C# | D# | E# |
The highlighted B# is the raised 4th — the note that gives Lydian its sound.
Lydian vs. Major
Everything else about the two scales is identical — these are the only degrees that change.
| F# major | F# Lydian | Note |
|---|---|---|
| 4 | #4 | B# |
Chords in F# Lydian
The seven chords of Db Major, reordered to start from F# — vamping between the first two or three keeps the Lydian sound from collapsing back into the parent key.
Songs That Use the Lydian Sound
Steve Vai — “The Riddle”
Steve Vai is a Lydian devotee. The floating, otherworldly quality of his lead lines comes from emphasizing the #4 over major-sounding backing tracks.
Joe Satriani — “Flying in a Blue Dream”
The dreamy, soaring quality of the main melody comes from Lydian's raised 4th. The #4 creates a sense of floating rather than resolving.
The Simpsons — “Main Theme (Danny Elfman)”
The iconic theme is in C Lydian — the F# (raised 4th) in the melody line is what gives it that quirky, slightly off-kilter feel.
F# Lydian Mode FAQ
What is the F# Lydian mode?
F# Lydian is the 4th mode of the Db major scale — the same seven notes starting from F#: F#–G#–A#–B#–C#–D#–E#. The interval formula is R–2–3–#4–5–6–7.
What is the difference between F# Lydian and F# major?
One note: where F# major has 4, F# Lydian has #4 (B#). That single half-step is the entire difference in sound — everything else about the two scales is identical.
What chords work with F# Lydian?
The seven chords of the parent Db major scale, reordered to start from F#: F# (I), Ab (II), Bbm (iii), C° (#iv°), Db (V), Ebm (vi), Fm (vii). A two-chord vamp between F# and Ab is the classic way to establish the Lydian sound without drifting back to the parent key.
What major scale has the same notes as F# Lydian?
Db major. F# Lydian uses exactly the notes of Db major starting from its 4th degree, so every Db major shape on the fretboard doubles as a F# Lydian shape. The same notes also spell Db Ionian, Eb Dorian, F Phrygian, Ab Mixolydian, Bb Aeolian, and C Locrian.
How do I practice the F# Lydian mode?
Modes live and die by harmonic context — run over a static F# vamp or a drone on F#, not a full progression that pulls back to the parent key. Play the Db major shapes you already know, resolve every phrase to F#, and lean on the raised 4th (B#). OpenFret's free Studio has a fretboard viewer and metronome for exactly this, and Guitar Quest turns scale practice into a game with real-time pitch detection.
Modes Sharing These Notes
All seven modes of Db Major use the same seven notes — each one treats a different note as home.
Related Modes
Practice F# Lydian with real feedback
Guitar Quest listens to your real guitar and turns scale practice into a game — run modes to battle monsters, with every note checked by pitch detection. Free in your browser, no signup needed.