Sarah Davachi composed Diptych for viola (Victor Guaita Igual) and the telescope aulos of Lukas De Clerck. The telescopic aulos is a collapsible, metal double-pipe, self-designed by Lukas De Clerck, based on the double-reeded instrument of ancient Greek origin. Diptych explores the intricate nuances of duality. This duality is expressed through the interaction of the two musicians and Sarah Davachi, and in the distinct functions of the aulos’ two independent pipes, serving as both a chanter and drone.

In addition to accentuating inherent dualities within the performance environment, Davachi focuses on the role of the viola which provides a foundational structure characterised by shifting dyads throughout the composition. Davachi incorporated a broad application of microtonality in the composition given the challenges of precise tuning in the aulos’ frequency spectrum. This approach enables the two performers to dynamically navigate moments of perceived consonance and dissonance in real time, challenging conventional interpretations of these terms in the context of harmonic relationships.