Jose Martins Sobrinho was an amateur of the guitar from São Paulo and  possessed of a vast library, as well as being a reasonable composer. Martins was part of the “Cultural Society of the Guitar” of whose members were: Isaias Savio, Ronoel Simões and himself. As a great lover and good performer of the instrument he made many transcriptions of the South American folklore works, which was his main taste. Some times Martins promoted in his home, many musical evenings in which they had their friends and other guests and good guitarists. Martins collected guitar sheet music for many years and in the shelves of his library we can see among many others, the first editions of Tarrega, Cano, Jose Ferrer, Juan Parga and some princeps editions of Fernando Sor. Jose Martins Sobrinho was really a great guitar lover.
(Edmar Fenicio)