I've been a big Tom Waits fan for years and always conscious of the big difference between his asylum years stuff and the later albums. But tonight I've been listening to Closing Time and Swordfish Trombones and wondering just WTF did he do to change his voice from bar room crooner to gargled gravel? Is it affectation? Too much whisky? Nodules? Can't think of another singer who has so fundamentally changed the style of their vocals.