In the mold of Janet Jackson and Aaliyah, Keri Hilson is an R&B diva with artistic ambition. Backed by some of the mainstream’s most creative minds (Timbaland, Nate “Danja” Hills, Polow Da Don), In a Perfect World ranks as one of the boldest pop creations of 2009. The simmering sexual tension of “Slow Dance,” “Make Love,” and “Where Did He Go” proves that Hilson can turn up the heat when she feels the need.