Vocal forms refer to various styles and structures of music that primarily feature the human voice. These forms can include genres like opera, choral music, and solo singing, each with its own unique characteristics and techniques. Vocal forms often emphasize melody, harmony, and lyrics, allowing for emotional expression and storytelling through song. Different vocal forms can be categorized based on their purpose and context. For example, art songs are typically composed for solo voice and piano, while hymns are designed for congregational singing. Understanding these forms helps appreciate the diversity and richness of vocal music across cultures and time periods.