Alexandra earned an M.A. in Arts Management in 2012 from George Mason University's College of Visual and Performing Arts, through which she learned about The Vivaldi Project's Institute for Early Music on Modern Instruments (EMMI). She volunteered to manage EMMI in 2011 and thoroughly enjoyed the program. Alexandra was hired as administrative director for EMMI in 2012.
She has developed performing arts programs overseas as international program coordinator for Very Special Arts (VSA) at the John F. Kennedy Center for the Performing Arts. As advocacy and communications consultant for the Arts Council of Fairfax County, she implemented the new Title One Creative Arts Program in six Fairfax County elementary schools, and the Americans for the Arts 2012 Art and Economic Prosperity Study survey in Fairfax County. In 2012, Alexandra served as Virginia's team captain for Americans for the Arts Arts Advocacy Day on Capitol Hill. She also secured arts speakers and performers to lobby on behalf of the Arts Council at Fairfax County's FY2013 Budget Hearings, resulting in $50,000 for the arts in 2013.
Alexandra Mattson's interest in baroque music developed from seeing a performance of Mozart's "Zauberflote" at the Mozarteum in Salzburg, Austria, in her youth. She has studied piano and classical guitar privately, and has sung Handel's "Messiah" as a member of her high school choir at the American Community School in Beirut. She is a former Balkans/Morocco desk officer with Peace Corps.