Born in Oakland, Maryland, Amanda Stewart began study on the trombone at the young age of six. Her studies started with Harold Hudnall and continued with Keith Jackson, Professor of Trombone and Euphonium at West Virginia University. Receiving her Bachelor of Music degree from the Juilliard School, Amanda studied with Joseph Alessi, principal trombonist of the New York Philharmonic.

As a soloist, Amanda has performed twice with the Deep Creek Symphony and also as a guest artist at the International Women's Brass Conference. As an orchestral musician, Amanda has performed with the National Repertory Orchestra, Music Academy of the West Orchestra, the DiCapo Opera Theater Orchestra, the North Carolina Symphony, and has been the acting principal trombonist with the San Antonio Symphony since the fall of 2004. Initially in 2003, Amanda was appointed the assistant principal/second position with San Antonio Symphony. Since 2004, Amanda has also performed frequently with the San Antonio Brass in large choir settings and also as the trombonist in the symphony's brass quintet. Currently, Amanda is an adjunct instructor at Our Lady of the Lake University in San Antonio.