Frank Mastropolo

In the decades that followed, one became a superstar while the other found a rockier career path.

That sound you hear is a million Beatles fans' hearts breaking.

By early 1963, the value of the songs written by John Lennon and Paul McCartney was obvious to Beatles manager Brian Epstein.

The Rolling Stones lifted their unofficial ban on doing benefit concerts on Jan. 18, 1973, when they performed to aid the earthquake victims of Nicaragua.

Jimmie Nicol, a 24-year-old London drummer, joined at the height of Beatlemania in June 1964 – then vanished.