Henrietta Yurchenco’s quest to save living music from the past took her from the mountains of Guatemala and southern Mexico to the Jewish community of Morocco and, ultimately WNYC, where she was a radio producer, announcer, and interviewer (of Woody Guthrie and Bob Dylan, among many others). She died at the age of 91 here in Manhattan. The pioneer folklorist used to call in, all the time, to fill us in on matters of music.