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Meet the Faculty

Meet the Faculty

Marina Beeson



- B.A. Vocal Performance from New England Conservatory
- Teaching privately since 2018
- Co-Director of I am the Lead!
- Specializes in teaching vocal technique for opera and musical theater as well as sacred music


(Virtual Only)

Mary Carr



- B.M. Music History from Catholic University of America
- Teaching privately since 2009
- Specializes in multiple string instruments
- Proficient in instrument repairs and maintenance

Emberlein Di Salvo

- B.M. Vocal Performance; Minor in Performing Arts Management; Catholic University of America
- Director for GMA’s I am the Lead! program
- Teaching privately since 2020
- Former Dance Programming Intern for the John F. Kennedy Center for the Performing Arts

Andrew Ferguson



- B.A. from Peabody Conservatory
- Teaching privately for over 10 years, including time with The Suitland School for Performing Arts
- Former orchestra member for the Maryland Choral Arts Society
- Member of the Magic Ray Quintet

Matthew Guilherme

- Graduate of Bridgewater State University
- Studied Music Theory under Berklee graduate, Felix Rentschler
- Teaching privately since 2014
- Performed on renowned stages such as Connolly's Pub in Times Square and Big Night Live
- Lead guitarist/vocalist in nationally acclaimed wedding bands (i.e. Closing Time Boston & Bachelor Boys Band)

Charles Jones



- Woodwind and Classical studies at Howard University and Morgan State University; Jazz Improvisation studies at Peabody Conservatory
- Teaching privately for over 40 years
- Extensive performing career, notably opening for Earth Wind and Fire, Rick James, Kool and the Gang, and more
- Band Director for The Lower School at Calverton

Peter Leon

- Lead vocalist, guitarist, and bandleader for Latin Rock band Division Mayúscula 
- Performing live in various bands since his early teens 
- Experience teaching guitar, bass, drums, piano, and digital recording
- Experience teaching group classes

Josh Lewis

- B.M. Music from University of Maryland
- Former Calvert County Public School Teacher
- Principle Tuba of the National Youth Orchestra USA in 2017
- Performs with local ensemble on holidays and special occasions
- Began teaching piano and guitar at GMA in 2023

Jonathan McPherson


- B.M. Electronic Music Production and Sound Design from Berklee College of Music; Piano studies at University of Louisiana
- 3 Air Force Band overseas tours 
- Highlights include performing alongside Drake White, Arturo Sandoval, and NFL Halftime show with Max Impact
- Won a team Emmy Award in 2021 for Red Tail Angels as a composer and sound mixer

Teresa Nielsen


- Graduated from Brigham Young University
- Teaching privately for over 25 years in the U.S. and overseas
- Utilizes a wide range of teaching methods for beginner and intermediate students of all learning styles

Scott Shirley

- A.A. Music Performance from Prince George's Community College
- Teaching privately since 2009
- Former director of Product Scheduling for PRS Guitars
- Performs locally with several bands, primarily in Rock and Country styles/venues

Ross Thompson



- Graduate of University of Maryland, College Park School of Music
- Alumni of the Oberlin Trumpet Workshop (2 years)
- Teaching privately since 2013
- Students have seen success in Maryland All-State Band, Solo & Ensemble festivals, and the National Trumpet Competition
-  Member of various groups, including the Chesapeake Orchestra and Magic Ray Jazz
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