If you're looking for an overview of the art of dub as it has been practiced by the RAS label since its inception in the late '70s, then you have definitely come to the right place. The highlights are provided by some acknowledged masters of the genre: Scientist (whose remix of Culture's "Share the Riches" is one of the album's finest tracks), Mad Professor, and Errol Thompson. The mixes by American dub fiend Jim Fox, and by Dr. Dubenstein (who is almost certainly RAS label head Dr. Dread), are equally exciting. If you use this album as an introduction to the art form, let it lead you to more classic material by King Tubby, Augustus Pablo, and Lee "Scratch" Perry.