How is the term "piano" (p) defined in music?

The term "piano," indicated by the letter "p," is indeed defined as "soft" in musical notation. It instructs musicians to play a passage of music with a gentle tone, creating a delicate and subdued sound. This dynamic marking is part of a broader system that indicates varying degrees of loudness in music.

Understanding dynamic markings is crucial for interpreting a composer's intentions, as they contribute to the emotional and expressive quality of the performance. In contrast, other terms like "forte" (indicating loudness) or specific Italian terms for different volumes do not apply here, underscoring the importance of "piano" in creating softer dynamics in a musical piece.