fz is the abbreviation of Italian forzando, which means "strengthened" and is a musical intensity term.

Related terms:

1. Diminuendo/dim

2. Very weak: Pianissmo/pp

3. Weak ：Piano/p

4. Very strong: Fortissimo/ff

5. Strongest: Forte Fortissimo/fff

6. Strongest: Sforzando/sf

Extended information

Related background:

Venture marks usually use Italian musical terms. Composers mark detailed dynamics on the score, which can usually be divided into more than a dozen levels from the weakest to the strongest, and the intensity of each level is a relative value. Piano means weak, and is abbreviated as P. The more P's, the weaker it is. There can be up to 5 P's, which is extremely pianissimo.

Forte means strong, abbreviated as f. The more f's, the stronger. If there are five f's marked on the score, it is quite strong, and the performer must play with all his strength. In addition to these signs, there are also crescendo and decrescendo signs that are very similar to the less than sign and greater than sign in mathematics, as well as strong and weak signs, etc.

The changes in intensity in music are very detailed and complex. Each performer will make specific and detailed intensity changes based on his or her own feelings under the prompts of the composer.

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