Meet the experts who breathes life into recorded sound: Gavin Lurssen has won four Grammys including two for Album Of The Year for Raising Sand, performed by Robert Plant and Alison Krauss and produced by T Bone Burnett, and another for the soundtrack of O Brother Where Art Thou? His counterpart, Reuben Cohen, is a Latin Grammy winner and the winner of a TEC award for his work on “Happy” by Pharrell Williams.