Pianist Andrew Armstrong has an international career, having performed items from his large repertory of 35 concertos at all the major U.S. concert halls and prestigious venues across Europe. He is a noted chamber player, often performing and recording with violinist James Ehnes. In 2004, Armstrong made his recording debut with the album Andrew Armstrong Plays Rachmaninov, Scriabin & Mussorgsky. After releasing two recital albums in the early 2000s, Armstrong was highly visible on recordings in the 2010s, accompanying Ehnes on a cycle of Bartók violin-and-piano works. In 2015, the pair issued an album of violin sonatas by Franck and Strauss, and in 2019 began a cycle of Beethoven's works for violin and piano. The Beethoven series concluded in 2020 and, in 2023, backed Ehnes on the album Mythes: Szymanowski, Handel.