The more precise form of crescendo notation involves symbols that look like hairpins, inequality symbols, or alligator jaws. In most cases, "hairpin" is the standard term musicians use. Hairpin crescendo symbols show the crescendo's exact length and the prescribed volume at the beginning and end of the crescendo.
What does a crescendo symbol do?
Crescendo. Crescendo, abbreviated cresc., is an Italian term that translates as “growing”. In music, this means the music should gradually get louder. ... The crescendo symbol will be the entire length of the musical passage that is to gradually get louder.
What does a crescendo under a note mean?
The crescendo indicates that the music should gradually grow louder. The decrescendo is the opposite. These symbols can be made longer or shorter depending on the time over which the change should occur. They are usually placed below the staff, but occasionally above.