These two concertos show the increasing importance of the guitar duo on the world's concert stages. Leo Brouwer, one of the foremost Latin American composers, has written many admired guitar concertos but The Book of Signs is his first for two guitars, a double concerto of great virtuosity, with a majestic, songful theme in it's central movement. A crucial figure in the global promotion of Brazilian rhythms for the guitar, Paulo Bellinati deploys luxurious harmonies and brilliantly effective techniques to pay tribute to the country music of Sao Paulo State in Concerto Caboclo.