Sixteen-year-old Alexander Prior is one of Britain's most talented and prolific young composers. He began composing at the age of eight and has already written more than forty works. / Now Alex brings together some of the world's most remarkable young musical talent to perform a concerto. / Taking inspiration from these talents he writes a quadruple concerto and invites the children come to England for a week of intensive rehearsals, which climaxes in Alex conducting a concert at the Sage Gateshead, with The Northern Sinfonia. / But before the performance, Alex must ensure these extraordinary young performers are able to work together and create a spectacular performance on the night, as it promises to be a defining moment in all of their careers. (Source: Channel4.com)