Formed by Cláudio Cruz (first violin), Igor Sarudiansky (second violin), Horácio Schaeffer (viola), and Alceu Reis (cello), the Quarteto Amazônia is one of the most important Brazilian chamber groups. It has a repertory of compositions by Mozart, Beethoven, Brahms, Ravel, and Schubert, but the group is constituted, in its majority, by works of Brazilian composers, from important though obscure works like the two "Quartetos" by Lorenzo Fernandez. The quartet's recording of Heitor Villa-Lobos' "Quartetos Nos. 7, 8, 9, 10, and 11" was awarded in 1997 as the Best Album by APCA (As...