My friend who goes to discos tells me the Jacksons are the first major artists to put out a real disco album--designed for dancers, and listeners be damned. This may well be true--certainly the guitars and electric keyboards are more noteworthy than the singing. He also tells me it's the Jacksons' best album since who knows when, and what's surprising is that he's right again. This is a tribute to the aforementioned instruments, but the singing is fine, and if a lot of the songs live up to the album title, that ain't necessarily bad. For listeners (dancers too): "What You Don't Know." B+