What is a loud ceremonial tune that prominently features brass instruments called?

A loud ceremonial tune that prominently features brass instruments is known as a fanfare. Fanfares are typically composed to announce significant events or celebrate occasions, making them well-suited for ceremonial use. The use of brass instruments contributes to the bold and triumphant sound that characterizes a fanfare, distinguishing it from other musical forms.

Sonatas, requiems, and preludes have different musical purposes and characteristics. A sonata is a structured composition often for solo instruments, a requiem is a musical mass for the dead, and a prelude serves as an introduction to a larger piece or may stand alone as a short work. These forms do not focus on the loud, celebratory style associated with fanfares.