Who are the great "thought leaders" of the business world -- the ones whose experiences on the job and in life serve as guideposts for others who aspire to professional greatness? Bill Gates, perhaps? Warren Buffett?
What about John, Paul, George and Ringo?
That's what works for Beatles fans Richard Courtney, a Nashville real estate broker, and George Cassidy, a recording engineer, who see the Fab Four's success as the "ultimate business case study."
They've written "Come Together: The Business Wisdom of the Beatles," which uses anecdotes from the musicians' careers as springboards for lessons to aspiring business people.