APT.: "Forbidden" song haunts South Korea's Suneung students

A brief yearly silence has once again enveloped South Korea, as half a million students across the country sit for the most important test of their lives.Planes were grounded, construction work halted, and car honking discouraged as the Suneung, an eight-hour university placement exam billed as one of the toughest in the world, kicked off on Thursday.But this year, there was one sound that students were…