Aksel Rykkvin (12) sings 'The Boy' in 'Der Jasager' (2015) | Norwegian 

'Der Jasager' (He Said Yes) is an opera ('Schuloper' / 'school-opera') composed by Kurt Weill in 1930, with libretto by Bertolt Brecht.
This production in Norwegian language, 'Han som sier ja', premiered at the Norwegian Opera & Ballet in Oslo on Nov. 11, 2015.
The Children's Chorus of the Norwegian Opera & Ballet
The Boy: Aksel Rykkvin
The Teacher: Espen Langvik
The Mother: Vigdis Unsgård
Leader and conductor of the Children's Chorus: Edle Stray-Pedersen
Director: Gunnar Bergstrøm
Orchestra: Young musicians from Barratt Due Institute of Music and 'Musikk på Majorstuen'
This video includes the singing parts of the main character.