Vieux Farka Toure delivered Afropop as played by a blues-rock power trio at 9:30 Club. (All photos by Josh Sisk/FTWP)

Echoes of the musician's father, the late Ali Farka Toure, were frequently heard. Most of the songs began in the pentatonic, minor-key mode that caused the senior Toure's music to be labeled "Mali blues" — and which dominates "The Secret." On stage, though, that loping, hesitating style quickly yielded to faster, flashier playing. Toure's versatile tone and swaggering riffs recalled Chicago bluesmen such as Albert Collins, as well as Jimi Hendrix when he wasn't inclined to break out the lighter fluid. The trio's jazzy interplay also suggested the tighter moments of Cream, a band these days remembered mostly for acid-blues excess.