C# Lydian II
I – II – IV – I progression in C# major
C# Lydian II — I – II – IV – I
The C# Lydian II progression (C# – D# – F# – C#) 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 (C#Maj7 – D#Maj7 – F#Maj7 – C#Maj7), the Lydian color becomes even more luminous.