In Paris he gave his first concert conducted by André Cluytens with the Concert Society of the Conservatory at the Theatre des Champs Elysées. After that, many orchestras where requesting his presence like the radio Symphonic Orchestra of Berlin, an opportunity to present his works JUPITER 1, 2 and 3 for bandoneon and orchestra which was composed by order of the Teatro Colón, Buenos Aires. The famous Thomaskirche, where J. S. Bach acted during 27 years as organist, invited Barletta to give a bandoneon concert. Wolfgang Steffen, a well known composer of Berlin writes about Barletta's 24 Tangos de Camera: ``they are a work of a musical genius''. Some famous German contemporaneous musicians have compared these works with Paganini's Capricchios for violin and the 24 preludes for piano forte of Chopin. According to Napoleón Cabrera, the prestigious music reviewer of Buenos Aires' Clarin, considers him to be ``one of the most original composers''. The Italian maestro Massimo Pradella said: ``Barletta has had the glory to discover a new instrument for the chamber and contemporaneous music.''
During his concerts, Barletta surprises his audience playing compositions of the baroque period, for which the bandoneon was discovered to be a particularly suitable instrument; original pieces for bandoneon by American composers, and of course, his own compositions.