"Guidons" Natural Recordings by Native Speakers
Guidons are long, slender flags that are typically carried by the Color Guard or other designated units of a military organization, such as the Army, Navy, Air Force, or Marine Corps, during parades, ceremonies, and other official functions.
Guidonian refers to the Guidonian hand, a medieval musical notation system in which the lines and spaces of a musical staff were labeled with the names of notes and intervals, created by the Italian music theorist Guido d'Arezzo in the 11th century. The system was one of the earliest and most influential methods of music notation and played an important role in the development of Western music.