Ensemble Black Pencil frequently performs in unexpected places deep within nature. Examples include their annual performances at the Alluminous Light Art Festival and at the unique landscape artworks of Flevoland, featuring Land Art music composed specially for the ensemble. In these extraordinary locations, visual art, nature, and live outdoor music come together. On Sunday, August 30, 2026, the Waterloopbos in Marknesse will serve as the backdrop for a special concert. Right next to the impressive landscape artwork Deltawerk// (Delta Works//), Black Pencil will give an exclusive open-air performance. World Premiere of ‘Tij’ by Celia Swart The absolute highlight of this concert is the world premiere of Tij (Tide), a brand-new composition by Celia Swart. Performed for the very first time at the exact location of the artwork that inspired it, Swart’s piece captures the essence and raw power of Deltawerk//. Through her evocative musical storytelling, the audience will experience a profound dialogue between sound, structure, and nature. In addition to Swart’s piece, Black Pencil will perform a selection of works from their diverse, centuries-spanning global repertoire. Excursion with the Forest Ranger After the concert, you will explore the Waterloopbos alongside a forest ranger. You will discover the rich history of this former hydrodynamics laboratory, where researchers spent decades experimenting with harbors, rivers, and delta designs. Throughout the forest, you can see how quickly nature reclaims the land. Many old scale models are now overgrown with moss, plants, and trees, creating a fairytale atmosphere where a new surprise awaits around every corner.