Aaron regularly performs in the United States, South America, and Europe. On the concert stage, he enjoys a reputation as a first rate interpreter of the works of Bach, Handel and Mozart. He has also performed the title role in Boston Early Music Festival’s Grammy Award® winning recording of Charpentier’s opera La déscente d'Orphée aux enfers.
Aaron has performed at Tanglewood, the Lincoln Center, the Metropolitan Museum of Art, Washington National Cathedral, the Early Music Festivals of Boston (BEMF), San Francisco, Vancouver, Washington DC, Carmel, Regensburg Tage Alter Musik, and with Orpheus Chamber Orchestra, American Bach Soloists, Handel and Haydn Society, Boston Baroque, Tafelmusik, North Carolina Symphony, New York Collegium, Charlotte Symphony and Pacific Music Works.
His roles with BEMF include L'Amour and Apollon in Lully's Psyché, Actéon in Charpentier's Actéon, Orfeo Orfeo, Eurimaco Il ritorno d’Ulisse in patria, Acis in Handel's Acis and Galatea and Liberto/Soldato L’incoronazione di Poppea. He has also performed leading roles in operas by Cavalli, Handel, Weill, and Satie.