Listen to Semper Fidelis (Semper Fi) U.S. Marine Band online. Semper Fidelis (Semper Fi) U.S. Marine Band is an English language song and is sung by Army, Navy, Marines, Air Force and Coast Guard Bands. Semper Fidelis (Semper Fi) U.S. Marine Band, from the album 100 Traditional Patriotic Music Favorites : Use for Military Ceremonies, Honors, and Election Events, was released in the year 2011. The duration of the song is 2:43. Download English songs online from JioSaavn.