In 1957, the Orchestra of the Central House of Artists and Kapustin played at the VI International Festival of Youth and Students, which was in Moscow. At that time, the festival had 34,000 people in it who stood for 131 countries. The festival was the biggest ever. And it was here, on the world stage, that Kapustin had his work played for the first time, the Concertino for piano and orchestra (which he wrote in the same year). It was then that the composer found his style in the natural mix of classical structure mixed with jazz improvisations (making up things you play), harmonies, rhythms, chords, etc.