It was clear from the first chords of "Chalo," The Very Best's opener at Le Poisson Rouge last Saturday night, that hipster world music had found its next act. Since releasing their mixtape Are the Very Best late last year, this border-crossing collaboration between London-based Malawian singer Esau Mwamwaya and Euro DJ pair Radioclit has been hyped by the anointers at Pitchfork and the Fader, building serious—and deserved—buzz for their debut album, Warm Heart of Africa, which comes out this fall...