The annual series of Mash Up Mix albums by the Cut Up Boys on the Ministry of Sound label were so successful, the mash-up duo took the time to do an additional double-disc volume dedicated exclusively to U.K. dance hits from the '90s. In theory, this could be a great album by the Cut Up Boys, who generally include a bit of '90s material on each of their Mash Up Mix releases. As it turns out, however, Mash Up Mix 90s is a major disappointment that seems as though it were thrown together with little care or effort. Far too many times, the a cappellas don't go together well with the accompanying instrumental tracks, and worst of all, there are a bunch of dreadful re-recordings in the place of original versions. The second disc is especially terrible in this regard. Evidently, many tracks were unavailable to the Cut Up Boys, but rather than cast them aside and find different tracks for use, the duo stubbornly took to the studio and re-recorded the material with session musicians. Besides the abundance of cover material, the track selection is often in bad taste. The '90s were a fantastic decade for music, electronic dance music in particular, but for whatever reason (for marketing reasons, one presumes), Mash Up Mix 90s is oriented toward overtly commercial dance hits by the likes of 2 Unlimited, Haddaway, Snap!, and Eiffel 65. While there's plenty to complain about on Mash Up Mix 90s, a big reason this is such a disappointing release by the Cut Up Boys is because their annual series of Mash Up Mix albums is generally first-rate. Hopefully this particular release was a tossed-off effort by the duo rather than a harbinger of their future output.