Morris Magellan is an executive who runs a biscuit company in Scotland. He has a house in the suburbs, nice wife and kids and seems, on the surface, to be an embodiment of Thatcherite values. However, there is one major problem. He is a chronic alcoholic and, from the start, we sense that he is doomed and his life is about to disintegrate. He isn't a coke-and-booze bingeing style victim with one eye on the clock, hoping to meet Ms Right and acquire the two kids and the suburban home that will straighten everything out. He already has all this and it hasn't straightened out anything. Magellan's journey will never end. ''The Sound of My Voice'' is as extraordinary a vision of alcoholism as Malcolm Lowry's ''Under the Volcano''.