“Muzak began recasting itself in the mid-1980s and got a radical makeover when it relocated [to South Carolina]from Seattle in the late 1990s. Today its “audio architects” blend art and science to deliver original-artist music from Mozart to Gwen Stefani that fits the bill for some 400,000 clients from Dunkin’ Donuts to Bank of America. Muzak owns publishing rights to some 1.5 million songs.”