パガニーニ国際コンクール
Wallez was born in Lille. He graduated in first place in violin and chamber music at the Conservatoire national supérieur de musique et de danse de Paris. He won the highest prize of the 1960 Paganini Competition in Genoa after winning three lesser prizes in previous years. Wallez was laureate of the International Competition in Geneva, as well as of the Marguerite Long-Jacques Thibaud Competition in Paris.