Twenty young guest players joined 25 members of the orchestra at a workshop at Hanover Hall.
The combined orchestra is led by principal guest conductor Simon Over from the United Kingdom.
The hope was the young talents would eventually join the orchestra.
Together they played Franz Schubert's Symphony No 5 (I. allegro, III. menuetto) and Sergei Prokofiev's Romeo and Juliet (Suite No 2, Montagues and Capulets).