Learn the Lydian Augmented Mode
Lydian stretched to its limit. The #5 adds an augmented, unresolved quality on top of Lydian's dreaminess. It sounds otherworldly, impressionistic, and expansive. like staring into deep space.
Try Lydian Augmented interactivelyWhat makes it sound this way
The #4 provides Lydian's floating brightness, while the #5 pushes the upper structure further from stability. Together, these two raised notes create a sound that is like Lydian untethered from gravity. expansive and slightly surreal.
Overview
Lydian Augmented is the third mode of the melodic minor scale. It takes Lydian's signature #4 and adds a #5, pushing the brightness past stability into something more impressionistic and unresolved. It is a relatively rare sound in standard jazz repertoire but appears in modern composition and Wayne Shorter-influenced writing.
Why it sounds the way it does
Two notes are raised above Ionian: the #4 and #5. The #4 creates Lydian's floating quality, and the #5 removes the anchor of the perfect 5th. Without a perfect 5th, the scale cannot produce a stable major triad from the root. the tonic chord is an augmented triad, which is inherently unstable and symmetrical. This is why it sounds 'stretched'. there is no tonal center to land on firmly.
Chord fit
Lydian Augmented serves maj7#5 chords. These are uncommon in standards but appear in tunes by Wayne Shorter, Herbie Hancock, and in film scoring. The chord has an open, questioning quality; it sounds major but unresolved. If you see a Cmaj7#5, think A melodic minor (Lydian Augmented is the 3rd mode).
Practical improvisation use
Reach for Lydian Augmented when you encounter a maj7#5 chord in a jazz chart. It also works as a colorful substitution over a regular maj7 chord when you want to push beyond standard Lydian into more adventurous territory. Use it sparingly. its impact comes from contrast against more stable sounds.
Guitar practice angle
Start with a Lydian shape and raise the 5th by one fret. The resulting augmented triad (1-3-#5) should be drilled as an arpeggio across the neck. Because augmented triads are symmetrical (dividing the octave into three equal parts), the same shape repeats every four frets. This geometric property makes Lydian Augmented surprisingly easy to visualize on the fretboard once you see the pattern.
Compare it to...
Standard Lydian keeps the perfect 5th. it floats but stays anchored. Ionian #5 (from harmonic minor) has the augmented 5th but with a natural 4th instead of #4, making it less 'lifted.' Lydian Augmented is the most extreme major mode in common use: maximum brightness, minimum stability.
What to listen for
The augmented triad (1-3-#5) is the core sound. Play C-E-G# and sustain it. that unresolved, symmetrical quality IS Lydian Augmented. Then add the #4 (F#) and major 7th (B) to hear the full picture. Compare it against a regular Lydian chord (with G natural) to hear how the #5 destabilizes the sound.
Practice suggestion
Play a Cmaj7#5 voicing (C-E-G#-B) and improvise using only chord tones plus the #4 (F#). This five-note subset captures the essence of Lydian Augmented without the complexity of the full seven-note scale. Once it is comfortable, add the remaining scale tones (D and A).
When to reach for it
- •Over maj7#5 chords in jazz
- •Creating impressionistic, 'stretched' major sounds
- •Third mode of melodic minor applications
- •Augmented chord passages in modern jazz
On the fretboard
- •Learn it as Lydian with a raised 5th. one additional fret change from a shape you may already know
- •The augmented triad (1-3-#5) is the arpeggio skeleton. practice it across all string sets
- •Use string skipping to emphasize the wide intervals that give Lydian Augmented its spacious quality
Common mistakes
- •Confusing it with standard Lydian. always check whether the 5th is perfect or augmented
- •Using it over a regular maj7 chord without checking if the #5 clashes with the harmony
- •Neglecting the parent-scale shortcut: for Cmaj7#5, think A melodic minor
Test yourself
If you can answer these in your own words, you have the concept. If not, revisit the sections above.
- What two notes are raised in Lydian Augmented compared to Ionian?
- Which melodic minor scale generates C Lydian Augmented?
- Why does Lydian Augmented sound 'unstable' compared to regular Lydian?