This was the first album to consist of exclusively Lennon-McCartney
original material. Both songwriters were developing their own distinctive
style and would eventually go their own way. In this album, the elements
that contributed to making the Beatles' sound came together in a blend
of energy, electrifying guitars, melody, driving rhythm, and uplifting
harmonies to create an excitement that compels even today's listener
to jump right into the spirit of Beatlemania.