Lydian is the fourth mode of the major scale, with its own special melodic and harmonic attributes. Our "home" is now on the fourth degree of the significant scale, implying any motions are centred around that degree (as opposed to the 1 of the major scale). You'll hear Lydian's strange, expressive sound occasionally in popular music and jazz.
Learn more about the harmonic movements that suggest Lydian as our mode so you can identify and accompany these movements more with confidence and purposefully. Lydian is everything about the augmented fourth (4) interval, so this will be our main focus when revealing Lydian melodically. All we've done is raise the fourth from it's "natural" major scale position.
Start by getting to understand Lydian over the single significant chord tracks provided. Most Lydian based movements/changes will include the 2nd degree significant chord (II or V in relation to the parent significant scale), an entire action up from the Lydian tonic. For example, in F Lydian, we might move from F to G (or G7) briefly, returning to rest on F, Lydian's tonic chord.
Consider how the tones within the pattern link in a different way to each chord in the sequence as you construct your expressions. I always suggest starting with simple, 3 or four note expressions, experimenting with different techniques to a "destination" or target note. You can then deal with embellishing, refining and building on your phrases.
Develop the good concepts, correct the mistakes and constantly believe about how you can improve an expression to maximise its expressive capacity. That's what jam tracks are eventually great for. Grab that guitar and happy jamming!.
The Lydian Mode is the fourth of the 7 modes. Look At This Piece can see that Lydian scales relate to Significant: the F Lydian resembles a C Major played from F. The intervals in the Lydian Mode are likewise comparable to the Major Scale, just the fourth note deviates. See likewise Lydian Dominant.