What does the term giocoso refer to in musical expression?

The term "giocoso" in musical expression is derived from the Italian word meaning "joyful" or "playful." It indicates that a piece should be played with a sense of humor or light-heartedness, often characterized by a lively and cheerful character. This term invites performers to approach the music with a playful attitude, emphasizing a fun and spirited execution.

In contrast, other choices refer to different styles or emotional expressions. The notion of playing "quickly" relates more to tempo markings, while "with sorrow" conveys a somber mood, and "with strength" implies a bold or powerful style. None of these encompass the playful and humorous quality that "giocoso" specifically describes. Therefore, the appropriate interpretation of "giocoso" aligns perfectly with the idea of performing the music in a joyful and humorous manner.