mexico city improv?

dear friends i'll be back in my old stomping ground of mexico city aug 18-sep5. i know many composers there and punkers, but only two improvisers worth the term. if anyone is in contact with the sound guy from the knit who returned to mexico city, i forgot his name but he turned me on to husky-voiced singer chavela vargas, could you let me know or fwd this off list? thanks steve koenig n.p.: kent carter string trio- emanem