A true icon of Northwest jazz stopped by the KNKX studios recently. Singer, songwriter, educator, bandleader Greta Matassa has been a professional musician since her teen years, and was recently inducted into the Earshot Jazz Hall of Fame. With her long-running band, Matassa gave an appreciative studio audience a thrilling taste of her new album, Portrait . Featuring a portrait of Greta's mother painted by Greta's father, Portrait gets the CD release party treatment at Egan's in Ballard on June