Business lessons from The Beatles.

Ok, I know I overdo the anniversary thing. But this week does warrant a commemoration. Fifty years ago, the greatest band that ever was—the most successful musical ensemble of all time—took shape.

On August 13 1960, Pete Best joined the Beatles—finally giving the band a permanent drummer and stable membership. (For more, read my 2007 interview with Pete.) On August 16 they departed Liverpool for Hamburg, to begin their first club residency.

Within two-and-a-half years The Beatles had their first #1 hit in the UK. A year later they exploded in the US and began their domination of the world pop charts.