semicord

A Lydian scale

Notes
A B C# D# E F# G#
Formula
1 2 3 #4 5 6 7
Steps
W W W H W W H (W tone, H semitone)
Also called
A Lydian mode

Seven notes from A up to the next A. Each note is written with the letter its degree names, one letter each, so the spelling follows the formula.

A Lydian on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5D#5F#5G#5Bb5C4ABC5C#D#EF#G#A

From A4 to A5, the root in blue-green.

Intervals from A

NoteDegreeIntervalSemitones
A1root0
B2major second2
C#3major third4
D##4augmented fourth6
E5perfect fifth7
F#6major sixth9
G#7major seventh11

A Lydian on the guitar

Standard tuning, high e on top as in tablature, open strings to fret 12. Every dot is a note of the scale; the pattern repeats from fret 12 up.

eBGDAE357912EF#G#ABC#D#EBC#D#EF#G#ABG#ABC#D#EF#D#EF#G#ABC#ABC#D#EF#G#AEF#G#ABC#D#E

The seven chords of A Lydian

Every other note of the scale stacked on each note. Numerals are measured against the major scale on A, so a b marks a chord root a semitone lower than in major.

NumeralChordNotesSound
IAA C# E
IIBB D# F#
iiiC#mC# E G#
#iv°D#dimD# F# A
VEE G# B
viF#mF# A C#
viiG#mG# B D#

Seventh chords

NumeralChordNotesSound
Imaj7Amaj7A C# E G#
II7B7B D# F# A
iii7C#m7C# E G# B
#ivø7D#m7b5D# F# A C#
Vmaj7Emaj7E G# B D#
vi7F#m7F# A C# E
vii7G#m7G# B D# F#

Same notes, different home note

A Lydian uses exactly the same notes as C# natural minor, D# Locrian, E major, F# Dorian, G# Phrygian and B Mixolydian. What changes is the note the music keeps returning to, and with it which chord sounds like home.

Same notes as the key of E major: the chords are the same seven, but with A as home.

How A Lydian is built

Lydian is the major scale with a raised 4th: against A major, D becomes D#. It has the same notes as E major, played from its 4th note. The raised 4th, D#, is a tritone above the root, and it makes the chord on the 2nd note major (B); A to B and back is the bright, floating Lydian sound used in a lot of film music.

Played some notes and not sure which scale they come from? The scale finder listens to the piano, a MIDI keyboard or the microphone and ranks all 180 scales.

What this page cannot do

  • One spelling per scale. the root is spelled the way that needs the fewest sharps and flats.
  • Equal temperament only. Blues and many folk traditions bend notes between these pitches, and Arabic and Turkish maqam scales use quarter tones that a piano cannot play.
  • The guitar diagram shows standard tuning only and does not suggest fingerings; any note can be played in several places.
  • The sound is a simple synthesised tone made in your browser, not a recorded instrument.

Made with AI tools.