A Lydian II
I – II – IV – I progression in A major
A Lydian II — I – II – IV – I
The A Lydian II progression (A – B – D – A) uses a major II chord borrowed from the Lydian mode, creating a bright, unexpected harmonic lift before settling on the subdominant. Made famous by Lennon and McCartney, it sounds simultaneously familiar and surprising. With seventh voicings (AMaj7 – BMaj7 – DMaj7 – AMaj7), the Lydian color becomes even more luminous.