The V8's vocals will bring a tear to your eye, with pitched, hissing over-notes coming from the turbochargers (17-psi max boost) and a major-league, Late Model Sportsman-style warble from the tailpipes, abetted by an active exhaust system that opens up as the engine revs rise.
WSJ: 2013 Bentley Continental GT V8 Review: Get More From Less | Rumble Seat by Dan Neil