According to the credits on their debut album, "Since I Left You," The Avalanches are six young men, only two of whom play instruments (guitar and piano/percussion). The rest are listed as "mixers," which makes sense when you consider that the record contains no less than 900 samples. Surprisingly, no attorney is listed.

Most of the samples are found sounds: instructional records, obscure BGM. This is not a new idea. DJ Shadow has been shaping aural effluvia into compelling music for a while now. Cheeky Aussies that they are, The Avalanches also throw in recognizable stuff. "Flight Tonight" is built around a Prince Paul-De La Soul lyric, and the bass line from Madonna's "Holiday" features prominently in "Stay Another Season." (The Avalanches earn hip P.R. points for being the first recording artists to receive Ms. Ciccone's permission to sample her work.)

Though the group's sound is standard clubland, it is also more complex than the usual DJ product of marrying easy beats to reconfigured instrumental tracks. On "Two Hearts in 3/4 Time," a sweet Minnie Riperton-like vocal line is underscored with electric piano and then chopped up into waltz tempo. On the hilarious "Frontier Psychiatrist," the beat is actually provided by layers of wacky spoken-word samples about clinical psychology ("You're crazy in the coconut!") sandwiching a melodramatic brass section that announces an inner mounting terror. Somehow the cut morphs easily into a bright calypso guitar figure. Relief from psychosis? Self-delusion?

Fun for the whole family is more like it. The 60-minute CD flows much more smoothly than a lot of recent DJ mix albums and builds continually to a penultimate disco free-for-all. The final track stylistically approximates the opening one to bring the record full circle, and yet each track stands thematically on its own. Since it's often impossible to tell where samples end and instruments begin, The Avalanches represent a truly democratic party. Everybody, sampled and sampler alike, gets an equal shot at being a comedian.