Crescendo, Decrescendos, and Dynamic Sound Effects
Crescendos and decrescendos work together to increase and decrease tension in a composition. These dynamic markings create compositions that avoid sounding dull and lifeless. Without these dynamic attributes, a composition would stay the same volume throughout the work. 8-bit music, certain types of techno, harpsichord music, and music played with a celeste usually contains no dynamic contrasts. Composers use dynamics in music for various reasons. Crescendos consist of a gradual increase in sound throughout a composition while a decrescendo slowly decreases the sound over a specified length of time.