Manuel Borguñó was a prominent Spanish music educator who developed his teaching method based on the ideas of the French Maurice Chevais. He was the first one in Spain to develop the Chevais’ ideas to teach male adolescents to sing during the voice change or “developing stage,” as he called it himself. He created a new concept called “The Great School Choir” that included children of both sexes, as well as adolescents. All this was new at that time in Spain because nobody had done it before him. He taught intensively during the 1920s, although his main and first conclusions were published much later in 1938, just one year before the Spanish Civil War ended.After the war’s end, he had to move to the Canary Islands, where he continued to develop his method of teaching children and adolescents to sing. M. Borguñó was the only Spanish music educator to attend the Brussels meeting of ISME in 1953. His teaching method, which he finally ended definitively around 1970, contains a final singing instruction section for children and adolescents, and remains unpublished to this day. This last section of his method is a comprehensive summary of singing exercises, divided into several sections: breathing, diction, expressiveness, phrasing and stress, dynamics, messa di voce, legato, and staccato. This poster aims to show a graphic glance of the primary teaching material and didactic elements that Mr. Borguñó developed throughout his life until his death.