French music then followed the rapid emergence of pop and rock music at the middle of the 20th century. Although English-speaking creations achieved popularity in the country, French pop music, known as ''chanson française'', has also remained very popular. Among the most important French artists of the century are Édith Piaf, Georges Brassens, Léo Ferré, Charles Aznavour and Serge Gainsbourg. Although there are very few rock bands in France compared to English-speaking countries, bands such as Noir Désir, Mano Negra, Niagara, Les Rita Mitsouko and more recently Superbus, Phoenix and Gojira, or Shaka Ponk, have reached worldwide popularity.