Complex sentence: As a historical figure, Schmitt has largely been ignored by the Dutch, despite his pioneering role in the realisation of the country's first purpose built concert hall, the Felix Meritis, which opened in October 1788 with Schmitt conducting the inaugural performance.
Split into simpler sentences: As a historical figure, Schmitt has largely been ignored by the Dutch, despite his pioneering role in the realisation of the country's first purpose built concert hall, the Felix Meritis. The hall opened in October 1788 with Schmitt conducting the inaugural performance.