It's a Wonderful Business: The Art of Production Sound is a documentary film that offers an inside look at what it takes to record the dialog of actors and diegetic sounds on a movie set. This is the job of the production sound crew, in charge of recording the voices of some of the most talented and prominent performers in the motion picture industry. The documentary features interviews with former and current production sound mixers and boom operators from some of the most acclaimed films in the history of cinema. The film also explores the personal demands, the working conditions, and the sacrifices sound crews have endured to succeed in the always challenging, but very exciting, world of film making.