Which of the following bands is known as "President's Own" and is based in Washington, D.C.?

The United States Marine Band is known as "The President's Own" and is indeed based in Washington, D.C. This distinction comes from its long-standing tradition of performing for White House events and presidential functions. Established in 1798, the Marine Band has served as the official musical unit of the President of the United States for over two centuries.

Its unique relationship with the presidency sets it apart from other military bands, as it has played at nearly every presidential inauguration since Thomas Jefferson, who was the first president to invite the band to perform at the White House. The Marine Band not only plays for official state functions but also engages in outreach and educational activities, positioning itself as a vital cultural and patriotic institution within American music history.

The other military bands, while prestigious and influential, do not share the same title or specific connection to the presidency that the Marine Band does. Each band serves its branch of the military with excellence, but the Marine Band's identity as "The President's Own" is what solidifies its unique place within the realm of military music.