Would you like your business......to burst into public awareness like Lady Gaga?…to have the long-lived success of Mick Jagger?…to demonstrate the creativity of The Beatles?We don’t normally think of the music business as a source of entrepreneurial insight, but we should. The best bands have longevity, a depth of customer loyalty, and a level of profitability that puts most businesses to shame. And what they know—about marketing, partnerships, the power of bartering, and...