What is a mode?

• "The word ‘mode’ comes from the Latin for ‘manner, or method’ but musical modes all originated in ancient Greece, so they have Greek names. The modes were named after various regions, perhaps to represent the people who lived there, because Greek musical theorists were philosophers too, and associated the arts with aspects of morality. Basically, a mode is a type of scale, as in ‘do re mi fa so la ti do’. Alter just one of those notes and you can call your scale a ‘mode’ (https://www.classicfm.com/discover-music/latest/guide-to-musical-modes)

Why do we use modes?

• Modes help composers and musicians identify common patterns used. Various modes are famously used to play certain styles and can guide composers/musicians on how to add phrasing or how to write the next section.