This week on Three Tune Tuesday, we dive into the world of Sousa marches — not just as music, but as cultural artifacts. From the bold nationalism of The Stars and Stripes Forever to the disciplined dignity of Semper Fidelis, and finally to the unexpectedly comedic afterlife of The Liberty Bell, we explore what marches were meant to do, who they were meant to move, and how their meanings have shifted over time. It's a journey through patriotism, power, and the strange ways symbols evolve — all in three tunes.