Jazz has a long history of embracing new sounds, from the Chinese flute to the theremin. The jazz harp, made famous by Alice Coltrane, is relatively standard fare. But no one has played the harp with the virtuosity of Colombia's Edmar Castañeda. A frequent collaborator with Pacquito D'Rivera, Castañeda plays an intricate, fascinating music that draws on South American sounds and the improvisational language of jazz. He crafts almost unbelievable feats of cross-rhythms, layered with chordal nuances rivaling a flamenco guitarist's most celebrated efforts.