Sebastian Broman is an educator and ensemble coordinator in the marching arts. He began his performance career with Gold Drum and Bugle Corps (2014–2015) and went on to march with Pacific Crest Drum and Bugle Corps (2016), Blue Devils B (2017), and Broken City Percussion (2016–2017).
As an educator, Sebastian has contributed to several programs, including Gold Indoor (2024), Gold Drum and Bugle Corps (2024–present), and La Quinta High School (2024–present), serving as both a bass technician and ensemble coordinator.