A five-CD box set, containing a whopping 142 tracks and covering the group's entire career, that manages to feel like too much and not enough at the same time. True, all of the key hits and most of their finest album tracks are here. The group's decline after 1966 -- and very sharp decline after 1970 -- is inescapable, and even though most of the material here is from the 1960s, the fourth disc especially (spanning the early '70s to the late '80s) is very rough sailing indeed. It's true that about 50 of these tracks are previously unreleased, but be warned that many of them are demos, backing tracks, and alternate versions of well-known songs that aren't a great deal different from the officially released versions. Also, some of the unreleased "tracks" are radio spots. That's not to say that these rare items aren't interesting for the fan; they are. It's just that it's too overwhelming a package for the nonfanatic, and a rather expensive, spotty one for the devoted fan (who will undoubtedly already have at least half the contents). By far, the most interesting unreleased tracks date from the legendary Smile sessions (nearly an album's worth). Never actually completed, they aren't quite the masterpiece that some have claimed, but are extremely interesting, often beautiful excursions into psychedelic production and songwriting that often resemble sound paintings more than songs. Comes with a 60-page booklet by Beach Boy historian David Leaf.