A Revolution in Seven Years

No band has ever changed so much in so little time:

• Please Please Me (1963) — energetic rock and roll, recorded in a single day
• Rubber Soul (1965) — folk rock, richer lyrics, Harrison's Indian sitar
• Revolver (1966) — backward tape loops and psychedelic studio effects
• Sgt. Pepper's (1967) — the concept album as an art form
• The White Album (1968) — a sprawling double album spanning every genre

In seven years, they went from "I Want to Hold Your Hand" to "A Day in the Life." The distance between those two songs is a revolution.