sentences:  They set two classes per week, and he rapidly attained astonishing technical mastery and at the age of nine made his début in Latin America.In the summer of 1892 Juanito's first public presentation takes place at the Nuevo Casino in Castellón, where he is a pianist and violinist in five successful concerts.The programs appear in the pieces ""Adiós" "a la Alhambra"" de Jesus de Monasterio, ""Air varié"" by Charles de Beriot, and ""Balade et Polonaise"" by Henry Vieuxtemps among others.