The Zulian gaita is also a very popular genre, generally performed during Christmas. The national dance is the joropo. Venezuela has always been a melting pot of cultures and this can be seen in the richness and variety of its musical styles and dances: calipso, bambuco, fulía, cantos de pilado de maíz, cantos de lavanderas, sebucán, and maremare. Teresa Carreño was a world-famous 19th century piano virtuoso. Recently, great classical music performances have come out of Venezuela. The Simón Bolívar Youth Orchestra, under the leadership of its principal conductor Gustavo Dudamel and José Antonio Abreu, has hosted a number of excellent concerts in many European concert halls, most notably at the 2007 London Proms, and has received several honors. The orchestra is the pinnacle of El Sistema, a publicly financed, voluntary music education program now being emulated in other countries.