Which of the following describes a 'crescendo' in music?

A crescendo is a musical term that indicates a gradual increase in volume. This dynamic marking is used by composers to enhance the emotional intensity of a piece, contributing to its overall expressiveness. As musicians perform a crescendo, they slowly increase the loudness of the music, creating a seamless transition from a softer dynamic to a louder one. This technique can be particularly effective in building tension or leading into a climactic moment in a composition.

Understanding the concept of crescendo is important for interpreting musical scores and performing them appropriately, as it helps to convey the intended feeling and character of the music.