Sebastian Mullaert’s four-on-the-floor music for modern trance dance rituals fills a unique and extremely elegant universe of sound – yet it’s a closed system. So it’s amazing to hear the Swedish producer doing something truly groundbreaking again. Working with musicians of the Tonhalle Orchester Zürich, he went far beyond the scope of some classical musicians playing along to the boom of synthetic kickdrum and the mechanical hiss of hi hats. This documentary tells the story of Natthall, an audio-visual project that opens a fascinating new perspective on Neo Classial music.