Billed as the HNK Trio, these three had never played together before this year. Currently theyre touring five American cities, financed by a grant from an improvised-music exchange program created by two nonprofit organizations, Chamber Music America and French American Cultural Exchange.
Mr. Horvitz, who was involved in the hybridized jazz and improvised music scene in New York during the 1970s and '80s, moved to Seattle a little over 20 years ago, and there he became even more unclassifiable. Hes involved in chamber music, folk songs, opera, straight-ahead jazz, and projects like Wednesday's show, in which he played keyboards and prepared piano. (He and his wife, the composer and pianist Robin Holcomb, have programmed this months concerts at the Stone.)