Which term is often used to describe a bright and lively character in music?

The term "Giocoso" is frequently used in music to convey a cheerful, lively, and playful character. It indicates a particular style that is brisk and spirited, often bringing an element of joyfulness to a piece. When a composer includes "Giocoso" in the score, it signals to the performer that the music should be played in a vivacious manner, contributing to an overall bright atmosphere.

In contrast, other terms relate to different musical expressions; for instance, "Grave" refers to a slow, solemn tempo and mood. "Legato" describes a smooth and connected style of playing, emphasizing continuity rather than liveliness. "Piano" indicates soft dynamics, which is not associated with brightness or liveliness. Thus, the distinction of "Giocoso" as the term denoting a bright and lively character in music is clear and well-founded.