Fifteenth Annual Seminar: Parsifal. Speakers: Daniel Kletke, Ph.D., Erick Neher, Anthony Barone, Ph.D., Prof. Dr. Jürgen Maehder, Evan Baker, Ph.D.; Lew Grenville, moderator. Met principals: Dame Gwyneth Jones, John Keyes, Raymond Hughes, chorusmaster. William Sherman Public School 87; Sunday, 12:00 noon-5:00 p.m.