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The order from small to large is: f, ff. Sf in intensity symbol refers to burst intensity, which means burst intensity, and it is not in the same level as F (strong) and ff (strong), so it cannot be sorted.

Relevant strength marks:

First, PP (weak voice): very weak

Second, P (piano): weak

Third, mp (alto-piano): moderately weak.

Fourth, mf (alto-strong): medium strong.

Dynamic change is an important means of music expression. It can express rich emotions and cause the contrast and development of music. Generally speaking, the stronger the intensity, the more tense and dignified the music, and the weaker the intensity, the more gentle and euphemistic the music.

Extended data

Strength markers usually use Italian musical terms. Composers have detailed strength marks on the score, from the weakest to the strongest, which can usually be divided into more than ten levels, and the strength of each level is a relative value. Piano, which means weak, is abbreviated as P. The more P, the weaker it is, and there can be at most five P's, which is extremely weak.

Forte, which means strong, is abbreviated as F. The more F, the stronger it is. If the score is marked with five F's, it will be quite strong. In addition to these symbols, there are increasing and decreasing symbols that are mathematically similar to less than sign and greater than sign, as well as sudden increasing and decreasing symbols and so on.

Baidu encyclopedia-strength