On the Fela tribute, titled Kchaba, the singers continue their spirited singing but it is a much more electric release than previous efforts. Producer and keyboardist Alberto Gambino even uses screaming rock guitars on "Grito Libre," a funky but moving call for Africans to follow Fela's quest for freedom. And in the smooth ballad "La Princesa Perdida," there is the scratching found on much of today's hip-hop recordings. These contemporary additives might detract from the purity of the Hijas' singing, but Gambino is a tasteful producer and doesn't let the instrumentation dominate the vocals. As a tribute to Fela, however, Kchaba does come off as a bit of a cheap shot. The material is not Fela's, nor is the sound as in-the-moment, as jazzy, as most of his own recordings. There is a dramatic spirit in the performance, a sense of urgency in the delivery and the aftertaste of risk-taking in the music of Fela Kuti, but the Hijas sound too overproduced and bubbly, tasting flat as a yesterday's Coke by comparison.