Which of the following best describes a "choral piece"?

A choral piece is defined as a musical composition that is specifically written for a group of singers, usually performing together as a choir. This type of performance emphasizes vocal harmony and the interplay of multiple voice parts, which may include sopranos, altos, tenors, and basses, each contributing to the overall texture of the music.

The focus is on the collective sound that emerges when multiple voices sing in unison or harmony, making it a unique and rich auditory experience that showcases the beauty of group vocal artistry. Choral pieces can vary widely in style, ranging from classical to contemporary, and are often performed in various settings, including concerts, religious services, and competitions.

In contrast to the other options, which refer to solo performances, instrumental music, or non-vocal performances, the essence of a choral piece lies in its performance by a group of singers working together to create a harmonious musical expression.