Quarteto Radamés Gnattali performs Heitor Villa-Lobos's String Quartet No. 9 at the Theatro Municipal in Rio de Janiero, Brasil. The ensemble was founded in 2006 and consists of Carla Rincón and Francisco Roa (violins), Fernando Thebaldi (viola), and Hugo Pilger (cello). The quartet, which specializes in Brazilian music, focuses on educational activities. Their recording of all of Villa-Lobos string quartets is a major achievement and was very well received by international music critics. Except for his Bachianas brasileiras, the performance of many of the Brazilian's compositions is limited to Latin America. Highly regarded as a composer, conductor and educator in his native country, Villa-Lobos has operas, symphonies, concertos, piano repertoire, choral music, and seventeen string quartets to his credit.