"superior to Segovia whom I saw in London last year". Barrios has been credited as the first classical guitarist to make recordings, in 1909/10, but the earliest known recording were by guitarists Luis and Simon Ramirez, onto cylinders, for the "Viuda de Aramburo" label, in Madrid, between 1897 and 1901. Barrios sometimes performed in concert in traditional Paraguayan dress (he was partly of Guaraní origin), beginning in 1932 using the pseudonym of Nitsuga Mangoré ('Nitsuga' being Agustín spelled backwards, and 'Mangoré' being the name of a cacique of the South American indigenous group Timbú). His works were largely late-Romantic in character, despite his having lived well into the twentieth century. Many of them are also adaptations of, or are influenced by, South American and Central American folk music. Many of them are considered virtuosic. The Johann Sebastian Bach-inspired La Catedral, from 1921, is widely considered to be Barrios' magnum opus, even winning the approval of Andrés Segovia, who said "In 1921 in Buenos Aires, I played at the hall La Argentina noted for its good acoustics for guitar, where Barrios had concertized just weeks before me. He was presented to me by his secretary Elbio Trapani. At my invitation Barrios visited me at the hotel and played for me upon my very own guitar several of his compositions among which the one that really impressed me was a magnificent concert piece The Cathedral whose first movement is an andante, like an introduction and prelude, and a second very virtuosic piece which is ideal for the repertory of any concert guitarist. Barrios had promised to send me immediately a copy of the work (I had ten days remaining before continuing my journey) but I never received a copy." However, it is equally possible that Segovia did receive the score and chose not to play it, either out of distaste for Barrios' folk-based music or professional jealousy (because Barrios was more of a composer than he was). Later life and death After touring Europe in 1934-35, Barrios performed in Venezuela, Haiti, Cuba, Costa Rica, Nicaragua, El Salvador and Guatemala. Several writers have suggested that Barrios revisited Mexico in 1939, but his immigration file with the Mexican government did not include an entry for him or his wife Gloria that year. He fulfilled his dream to reach the United States after getting an entry visa at the US Embassy in Maracaibo Venezuela on