They've been waiting 12 years for this, so Kate Bush's fans are entitled to demand nothing less than a masterpiece. And, amazingly enough, she's very nearly delivered it. This double album is everything you've ever loved or hated about pop's most reclusive lady - beautiful, mysterious, intelligent and eccentric. It's also a bit whimsical at times, of course, but then her legion of devoted admirers wouldn't have her any other way. The first CD is largely about her domestic life, and is pretty near flawless. The second disc is built around the theme of birdsong and is a bit more off the wall, but contains more than enough sublime moments to make it worth sticking with. Unique is an over-used word in pop music, but in Bush's case it's absolutely justified - and Aerial shows why. It's a triumph.