Sorry for any confusion, but could you confirm if the artist "RUMO" you are asking about is indeed the Brazilian group that gained prominence with its experimental approach to popular Brazilian music, sometimes known as MPB (Música Popular Brasileira)? Their discography includes albums named Rumo (1981), Rumo ao Vivo (1986), Caprichoso (1985), Diletantismo (1983), and Rumo aos Antigos (1992). If this is accurate, I can proceed with the biography.