Try as scientists might, there have been three phenomena that have consistently evaded their explanation and understanding throughout the history of time: Gravity, Curling and Audio Mastering. With the plethora of mastered and unmastered demos we receive here at the Bridge (send us yours??), I figured it might be high-time to do some investigation into the third of these three mysteries. Asking musicians was no help. Responses genereally centred around vague comments like "it adds an extra sheen". So I thought i'd get the word straight from the horse's mouth. The horse here is William Bowden a.k.a King Willy a.k.a Willy The Masterer. Aside from his numerous nicknames, he's a man with a lengthy history in the music industry and is hugely respected by musicians and audio boffins alike. I managed to sneak into his self-designed mastering suite (fashioned into the back shed of his residence in Stanmore) and threw a few questions at him in his lunch break.