He received his first few major awards prior to reaching the age of 20 ; he took the Henri Vieuxtemps and François Prume prizes in 1939 , and received the Prix de Virtuosité from the Belgian government in 1940 .
He received his first few major awards before reaching the age of 20 . He took the Henry Vieuxtemps and François Prume prizes in 1939 , and the Prix de Virtuosité from the Belgian government in 1940 .