Mark Deffenbaugh

Mark Durward Deffenbaugh, born on October 24, 1956, passed away on Friday, July 17, 2026, in Baltimore, Maryland, at the age of 69.

Mark was the beloved firstborn son of Durward J. "Dusty" Deffenbaugh and Helen Deffenbaugh, both of whom preceded him in death. He was also preceded in death by his younger brother, Jeffrey Deffenbaugh.

Growing up in Kensington, Maryland, Mark discovered his lifelong passion for music at an early age. He began as a self-taught musician, first learning to play the drums and forming several bands before the age of fifteen. He also performed with a Lutheran church music group that toured the East Coast. During that time, he taught himself to play guitar, continuing to expand his musical talents.

After graduating from Albert Einstein High School, Mark attended the University of Maryland, College Park, before feeling called to military service. He enlisted in the United States Air Force and was stationed in Montgomery, Alabama, where he proudly performed with the Air Force band.

Although his musical journey began without formal training, following his military service, Mark pursued his passion for music at the prestigious Berklee College of Music in Boston, Massachusetts. There, he further developed his skills as a musician, studying vibraphone and piano and expanding his knowledge of music theory, composition, and performance. His study of piano later led to his mastery of the keyboard, which became one of his signature instruments throughout his career.

Mark went on to share his musical talents with many respected artists, contributing to music through composing, arranging, producing, and vocals. One of his favorite memories to share was his role as the musical director for the Ben E King Stand By Me Foundation where he had the opportunity to work with legendary musicians across many genres of music. Although jazz and blues remained closest to his heart, Mark had recently returned to his rock-and-roll roots and was enthusiastically planning several new musical projects.

In addition to performing and composing, Mark found great joy in teaching. He shared his knowledge with students at Christian schools and numerous music schools in Baltimore and Washington, DC. He inspired countless musicians to discover and develop their own talents.

Music was not simply what Mark did; it was who he was. He will be remembered as a genuinely happy, kind, caring, and philosophical man who heard music in his head and carried love for others in his heart.

Mark passed with the peace and assurance that came from his deep Christian faith, knowing that he was saved.

His music, his faith, and the love he shared so freely will continue to live on in the hearts of all who knew and loved him.

For those who wish to express sympathy, consider donating to Friends of ROAM to fund scholarships for young musicians to learn, grow, and share their talents with the community. Please visit www.friendsofroam.org to donate.