What does the term 'crescendo' (cresc.) indicate in music?

The term 'crescendo' (cresc.) indicates a gradual increase in volume, meaning that the music should be played gradually getting louder over a specified duration. This dynamic marking allows composers to create a sense of build-up and intensity in their music, helping to express emotional nuances or highlight particular sections of a piece.

In performance, a crescendo often enhances the listener's experience, guiding them through the music's dynamics and contributing to the overall narrative or feeling being conveyed. Understanding and executing a crescendo is essential for musicians, as it adds depth and character to their interpretation of a piece.