B-sides and demos compilations are inherently dubious—they're essentially clearinghouses for second-tier tracks. Add some remixes of well-worn singles, and they become essential for diehards only. Gorillaz' double-disc D-Sides, an extension of the hit Demon Days, isn't as bland as that description suggests, but like 2002's G-Sides, it lacks the luster of the studio album that inspired it.
The remixes disc is mostly redundant, with three versions each of "Dare" and "Kids With Guns" by the likes of DFA, Soulwax, and Hot Chip. Since Gorillaz songs are essentially cut-and-paste endeavors to begin with, adding bleeps and a new bassline doesn't mean much, and often detracts from the group's appealing, eerily detached aesthetic. The B-sides and demos are more interesting, though "People" is just an inferior draft of "Dare," and "Rock It" sounds like a failed experiment unsuccessfully gussied up for a second chance. The rest of the disc should have a familiar appeal for Gorillaz fans, though a few standouts—particularly the fuzzed-out "We Are Happy Landfill" and "Hong Kong"—are distinctive enough to make D-Sides more than just a collection of table scraps.