Bernie Grundman is a legendary mastering engineer, but what is mastering, and why do people look for “BG” in the dead wax of vinyl albums? He has mastered some of the greatest, and greatest sounding, recordings of all time, including Joni Mitchell's Blue, Steely Dan’s Aja, Michael Jackson’s Off the Wall and Thriller, Prince’s classic run and OutKast's Speakerboxxx/The Love Below. He’s an enthusiastic talker as he discusses working with these famous artists, what he thinks of vinyl vs. CDs, and which sounds better, a pristine original album or one remastered on modern equipment? Prepare to have your ears opened.