In the parade of 2010 holiday releases, jj's was among the most anticipated. In late November, the pop polymaths gave away single "Let Them" and promised to leave a free, new mixtape beneath the tree on Christmas Eve. And there it was, glistening on the Sincerely Yours website when the 24th came: A download link, well worth the wait. Kills is a true mixtape in both senses of the word. First, like the American rap tapes they seem to love (they've toyed with a lot of non-mixtape material as well as R&B covers in the past), much of this outing finds Elin Kastlander laying her vaporous vocals over other people's samples. It's all very tongue-in-cheek but at its core, Kills, which features a version of the "Let Them" single re-titled "Kill Them", also plays like the kind of tape one fan/nerd might give as a gift, but with a twist. These are songs and samples and scraps of melody they clearly loved enough to share. ~ Pitchfork