Amazon.comVancouver techno-pop enterprise Delerium may be most widely known for getting Sarah McLachlan played in dance clubs; the famed songstress lent her vocals to their 1997 hit "Silence." DJ Tiesto's familiar dance-floor overhaul of the tune sets the pace for the double-disc compilation Odyssey, on which a procession of remix artists chop tracks from Delerium albums Semantic Spaces (1994), Karma (1997), and Poem (2000) into lengthy workouts. The selections favor straight-up disco and house over the sort of ambient experimentation that might have been culled from the original material. But the dub-styled "Flowers Become Screens (Return Mix)" and--on the spacier second disc--a goth-tinged take on "Silence (Fade's Sanctuary Mix)" offer a breather from the collection's rather athletic nature. Besides a clutch of previously released tracks, Odyssey also includes rare mixes of "Underwater," "Euphoria (Rabbit in the Moon's Divine Gothic Disco Mix)," and "Heaven's Earth (Matt Darey Remix)." And Delerium's trademark ethereal guest vocal tracks remain largely intact, so you can float and dance at the same time. --Kieran Grant