Currently, Armstrong is the Artistic Director and Conductor of the Brooklyn Symphony Orchestra. He is celebrating his 18th season, and the orchestra’s 40th season. The orchestra is a cultural partner of the Brooklyn Museum of Art, where they perform five concerts annually in the Cantor Auditorium.

Armstrong is also in his seventh year as the Head of Performing Arts at Poly Prep Country Day School in Brooklyn, NY. He continues to play violin and viola occasionally.