Hey Jude

The harmonic journey of 'Hey Jude' is a masterclass in structural contrast, moving from the intimate, diatonic stability of a ballad into a sprawling, modal rock anthem. The verses are firmly rooted in F Major, utilizing a 'hymn-like' progression of I, IV, and V chords that provides a sense of parental comfort and reliability. This simplicity is briefly interrupted in the bridge by an F7—a secondary dominant (V7 of IV)—which creates a sophisticated pull toward the subdominant Bb, accompanied by an elegant descending bass line (Bb - Bb/A - Gm7) that adds emotional weight and movement. Everything changes during the legendary four-minute coda. The song abandons its polite major-key functional harmony for the raw, cyclic energy of the F Mixolydian mode. By introducing the flat-VII chord (Eb major), The Beatles employ a 'Double Plagal' cadence (bVII - IV - I). This progression is a staple of rock and roll, stripping away the 'proper' classical resolutions of the verse in favor of a bluesy, infinite loop. It transforms the song from a private message of consolation into a communal mantra, where the repetitive harmony serves to sustain the ecstatic energy of the vocal ad-libs and orchestral build-up.

Paul McCartney wrote the song while driving to visit Cynthia Lennon and her son Julian following her divorce from John Lennon. Originally titled 'Hey Jules', McCartney intended the lyrics to comfort the five-year-old child during the family's upheaval. He later changed the name to 'Jude' because he felt it sounded better for the song's phrasing.

Originally composed to comfort Julian Lennon during his parents' divorce, this masterpiece evolved from a tender ballad into a global phenomenon. It redefined pop song structures with its massive four-minute coda, cementing its status as a cornerstone of rock history.