First there is the voice. Intense and deeply South African. Sibongile Mbambo sings in Xhosa, her "native music". This language crackles like fire to the rhythm of the percussive tongue snaps. The warm tone of Sibongile intertwined here with delicate acoustic guitars, serene beats of percussion, an airy and spirited flute, or an unexpected overtone singing, for a subtle and enchanting combination.