I think you are talking about a boy who sings as a soloist, right? His name is Jean-Baptiste Maunier Gérard Jugnot, he is a teacher and he is a member of the Saint Mark Children's Choir in Lyon, France.
I am a singer of the choral of Saint Marc. He sang in a church of Lyon(France) for many years. I took the trouble to post it
If you want to know more
just go here imdb/name/nm1533863/bio
Gerard Jugnot.. Gérard Jugnot From Wikipedia
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search Gérard Jugnot (born 4 May 1951 in Paris) is a French actor
film director
screenwriter and producer. He gained international fame for his lead role in Les Choristes. (The Chorus)
Reference: wiki!