Aaron Cassidy

Aaron Cassidy is an American composer and conductor based in Berlin and Hannover. He serves as Professor of Composition and Director of Incontri – Institut für neue Musik at the Hochschule für Musik, Theater und Medien Hannover. His work emphasizes innovative graphical notations prioritizing physical sound production and non-geometrical rhythm theory. Cassidy’s compositions have been performed globally across 29 countries, with 12 commercial recordings on major labels like Kairos and NEOS.

As a conductor, he specializes in contemporary and historical repertoire, leading over 100 world premieres with ensembles such as Ensemble Musikfabrik and ELISION. Notable engagements include the Munich Biennale and Melbourne Recital Centre. His recent research includes a 2025 reflection on non-geometrical rhythm and collaborative Erasmus+ residencies in Klagenfurt. Current projects include works for bassoon, violin-piano duet, and ANAM residency with ELISION in Melbourne (2025).

Cassidy’s academic focus bridges compositional theory and performance practice. His research explores notation’s role in shaping musical interpretation, with particular attention to rhythm’s non-metric frameworks. Recent works like Reassessing Non-Geometrical Rhythm (2025) synthesize a decade of theoretical development. His teaching integrates experimental techniques and historical context, fostering innovation in Hannover’s new music institute.