We'll likely hear more this week about when, exactly, Mitt Romney left his top job at Bain Capital. But here's the question that will persist: Job creator, or job destroyer? And that question's bigger than Bain, bigger than Romney -- bigger than any one election.

The presidential campaign has returned to the issue of private equity and the outsourcing of jobs. President Obama has latched onto a Washington Post report that says private equity firm Bain Capital, which Mitt Romney used to run, helped pioneer the outsourcing of jobs.

The national music instrument retailer opens more stores. Bain Capital took Guitar Center private five years ago. What's the secret to its growth?