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.
This page is the key-specific reference. If you want to understand why the modes sound different, start with the free Guitar Modes Interactive Book. It teaches tonal center from scratch, then uses parallel comparisons, ear training, and a riff-writing capstone.
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#).
Tap any dot to hear that exact pitch. Swipe sideways to see the full neck. With a keyboard, use Tab and press Enter or Space.
Choose a dot to hear its pitch
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.