Original: In 1837 Felix Mendelssohn conducted a performance of his St. Paul oratorio, played the organ, and played the piano part in the premiere of his second Piano Concerto, specially commissioned by the Festival.
Simplified: In 1837 Felix Mendelssohn conducted a performance of his oratorio St. Paul, played the organ, and played the piano part in the first performance of his Piano Concerto No. 2 which had been especially commissioned by the Festival.