Where culture is concerned, in Madrid variety reigns. With modern art centers【B1】______from discarded factories and traditional Spanish musical theater【B2】______modern themes, there are seemingly endless ways to dive into the arts in Madrid. One of those old industrial spaces is Matadero Madrid, 【B3】______a vast slaughterhouse and now a livery multidisciplinary arts【B4】______with design, technology and art exhibitions, as well as experimental theater. Then theres the Filmoteca Espanola in the Cines Dore, in an easy-to-miss【B5】______next to a fish market. With about 10【B6】______film series each month—retrospectives of beloved directors, a series of documentaries about gypsies—【B7】______a bookstore and restaurant, all【B8】______in a gorgeous Art Deco theater, its a great【B9】______for a rainy autumn afternoon. One flight above that same fish market, the Mercado Anton Martin, youll【B10】______feet stomping in the hallowed halls of Amor de Dios, the famed flamenco school【B11】______which legends like Antonio Gades, Sara Baras and Joaquin Cortes have passed as either students or teachers. Whether youre thinking of【B12】______or just sneaking up to【B13】______on a class in action, its the citys most【B14】______scene for flamenco. 【B15】______the cutting-edge crowd out the classics, there are always operettas to be heard at the historic Teatro de la Zarzuela, named for a Spanish genre that【B16】______means huge productions with lavish【B17】______and sets, exaggerated comic gestures and【B18】______happy endings. The new【B19】______begins Oct. 17 with the classic ' Soto del Parral' ,【B20】______pokes fun at provincial ways, and will close in June with the world premiere of ' YoDali', a contemporary opera about the life of Salvador Dali. 【B1】