Aaron Cassidy is an American composer and conductor. After 15 years living and working in England, in 2022 he relocated to Germany, which had increasingly become the base for much of his conducting activity. He lives in Berlin and works as Professor of Composition at the Hochschule für Musik, Theater und Medien Hannover, where he also serves as Director of Incontri – Institut für neue Musik.

As a composer, he is best known for his influential work with multicolored, graphical, tablature notations that prioritise the physical, bodily, and mechanical aspects of sound-production in music, alongside his more recent work exploring the notation of ‘non-geometrical’ rhythm, which untethers speed, duration, and meter from traditional concepts of pulse. Recordings of his work are available on 12 commercial CD releases from NEOS, Kairos, NMC, HCR, and New Focus Records, and his compositions have been presented in hundreds of performances across 29 countries at festivals including Donaueschingen, Ultraschall, Warsaw Autumn, Huddersfield, Darmstadt, Gaudeamus, Dark Music Days, Music Biennale Zagreb, Bludenz, Mixtur, and Tage für Neue Musik Zürich, and at important venues for new music including Southbank Centre London, Miller Theatre, National Concert Hall Taipei, and the Melbourne Recital Centre

Aaron’s work as a conductor is stylistically diverse, encompassing both contemporary and historical repertoire across orchestral, operatic, chamber, and choral settings. He has performed in the Großer Saal of the Berlin Philharmonie for Musikfest Berlin, at the Munich Biennale, MaerzMusik at the Festspielhaus Berlin, the Elisabeth Murdoch Hall of the Melbourne Recital Centre, Gare du Nord Basel, Dampfzentrale Bern, Akademie der Künste Berlin, Klangbrücken Festival, and June in Buffalo. He has appeared as a conductor with Ensemble Musikfabrik, ensemble mosaik, ELISION, Ensemble Proton Bern, Schola Heidelberg, International Contemporary Ensemble, Ensemble Interface, the Australian National Academy of Music, Ensemble Incontri, and the Northwestern University Contemporary Music Ensemble, leading many dozens of world premieres in the processHe has recorded as a conductor for Kairos, HCR, and Wergo.

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CURRENT/UPCOMING

  • sonata for violin and piano (in progress), for Harry Ward and Alex Waite
  • The wreck of former boundaries (2016) for solo clarinet. Carlos Cordeiro, clarinet. “Klang|Schrift: Perspektiven auf Notation,” Hochschule für Musik und Theater Leipzig, Germany. 5 December 2025
  • 27. Juni 2009. ELISION (Carl Rosman, E-flat clarinet). Melbourne Recital Centre, Salon. 20 February 2026
  • 27. Juni 2009. ELISION (Carl Rosman, E-flat clarinet). Phoenix Cultural Centre, Sydney. 22 February 2026 
  • 27. Juni 2009. ELISION (Carl Rosman, E-flat clarinet). Callaway Music Auditorium, University of Western Australia, Perth. 24 February 2026
  • Piano Concerto (wp, revised version). ELISION (Aaron Cassidy, cond.). Klangbrücken Festival, Richard Jakoby Saal, Hannover. 16 April 2026
  • Conductor, ELISION & Ensemble Incontri. Works by Liza Lim, Charlie Sdraulig, Evan Johnson, Aaron Cassidy, Jakob Lerch, Betty Zampia Mavropolou, and Iannis Xenakis.  Klangbrücken Festival. Richard Jakoby Saal, Hannover. 16 & 17 April 2026
  • Self-Portrait, Three Times, Standing (15.3.1991- 20.3.1991). ELISION (Aaron Cassidy. cond.) Vara Konserthus, Vara, Sweden. 20 April 2026
  • Self-Portrait, Three Times, Standing (15.3.1991- 20.3.1991). ELISION (Aaron Cassidy. cond.) Gothenburg Cathedral, Sweden. 21 April 2026. 

NEW CD RELEASE: 

  • Turgut Erçetin, in-between. Wergo 64462 (Podium Gegenwart/Deutscher Musikrat). Includes: Thousand dead bodies under my bed, all cloaked with the breath of the living (Ensemble Musikfabrik / Aaron Cassidy, cond.), Das Phonem zwischen zwei Wörtern (c) (ELISION Ensemble / Aaron Cassidy, cond.). Recorded at WDR Köln and Deutschlandfunk Köln. Released November 2025.

RECENT HIGHLIGHTS: 

  • Conductor, Ensemble Musikfabrik. Musikfabrik im WDR 93. WDR Funkhaus am Wallrafplatz, Köln, 12 July 2025
  • Conductor, Australian National Academy of Music (ANAM) residency with ELISION. Works by Xenakis, Donatoni, Lim, and Mundry. Melbourne, 16–20 June 2025
  • Conductor, Ensemble Incontri. Works by Boulez and Berio. Klangbrücken Festival. Richard Jakoby Saal, Hannover. 30 April 2025
  • Radio portrait, hr2-Kultur/ARD, “JetztMusik,” 30 January 2025
  • Conductor, Ensemble Musikfabrik. Recording works by Dariya Maminova for Wergo. Deutschlandfunk, Köln, 14–17 January 2025
  • Conductor, Akademie der Künste “Winter Music” 2024 (with Lange//Berweck//Lorenz, Seth Josel, and Martin Smith). York Höller Tangens. Berlin, 7 December 2024
  • Conductor, ELISION; with Harry Ward, violin solo (Lim); Joshua Hyde, saxophone solo (Bellamy); Paula Rae, flute solo (Barrett). Works by Richard Barrett (wp), Mary Bellamy (wp), and Liza Lim, plus Self-Portrait, Three Times, Standing (15.3.1991–20.3.1991). Elisabeth Murdoch Hall, Melbourne Recital Centre, Australia, 5 July 2024