Olli starts an orchestra (4+) Rotterdam Philharmonic Orchestra

One day Olli sets out with his trumpet. He goes on a journey and dreams of starting a big orchestra. Along the way, he meets other musicians who join him. Even though they don't understand each other, they all speak the language of music. The music connects them and together they can fight the evil in the city. Olli starts an orchestra based on the picture book of the same name by Didi Bok and Hein Mevi.