High Brass Coach, Green Machine Pep Band – Green Machine Ensembles
Mark Metrinko joins the Green Machine as a trumpet coach for the 2026-2027 school year! He is a proud alum of the band, having been a member from 2001 through the epic run to the Final Four in 2006.
Mark recently retired from The United States Army Old Guard Fife and Drum Corps, where he served as a bugler and drum major. Throughout his career, Mark has performed for four US Presidents, the Queen of England, the Pope, and countless other civic and military leaders at the White House, Pentagon, the US Capitol, and has traveled extensively representing the US Army at military and community events.
Prior to his military service, Mark was heavily involved with marching music, having been a member of The Cadets as well as a cast member and soloist for the Tony and Emmy Award winning production Blast. He later returned to the Cadets as a brass instructor, working with them from 2020-2023, and consulted with the Cavaliers in 2025.
Mark holds a Bachelor’s in Music Education from George Mason University, a Master’s in Business Administration from Liberty University, and is currently working towards a Master’s in Music at George Mason University.