"Pianissimo" is a musical term that indicates a very soft volume level. It is often abbreviated as "pp" in sheet music. Musicians use this instruction to create a gentle, delicate sound, allowing for emotional expression and contrast within a piece. In the context of orchestral music, conductors may signal musicians to play pianissimo to enhance the overall dynamics of a performance. This technique is commonly found in various genres, including classical, jazz, and film scores, where subtlety can evoke powerful feelings in the audience.