Aaron has conducted more than 300 World and UK Premieres in festivals such as Aldeburgh, HCMFUK//, Darmstadt, Wien Modern, Dark Music Days, Klangspuren and Gaudeamus. He has led ensembles in the United States, England, Wales, Scotland, Iceland, Sweden, Finland, France, Holland and Spain.  As the co-Artistic Director of Riot Ensemble Aaron has commissioned and conducted music by emerging and established composers ranging from Clara Iannotta and Bára Gísladóttir to Alex Paxton, Naomi Pinnock, Georg Friedrich Haas and Chaya Czernowin.