Complex sentence: In 1958, he was selected to perform for the visiting French president Charles de Gaulle, launching his career as a professional musician, and from 1967 he increasingly participated in international music competitions and festivals.
Split into simpler sentences: In 1958, he was selected to perform for the visiting French president Charles de Gaulle. This launched his career as a professional musician, and from 1967 he participated in international music competitions and festivals.