If you love opera, you’ll love hearing Mikael Eliasen, director of the Curtis Institute of Music Voice Department and Chautauqua Music School voice teacher, explain “Opera — What Is It?” at the Chautauqua Speaks program 9:15 a.m. Thursday at the Chautauqua Women’s Club. If you hate opera, you’ll still love hearing Eliasen explain “Opera — What Is It?”