Crescendo?

[vincentl]

For example, if in the 3rd measure of a piece a crescendo is written but there are no decrescendos in the following measures, do I maintain the last dynamic of the crescendo throughout until there is a decrescendo or another symbol of a dynamic?(e.g; The crescendo is a pianissimo - fortissimo; do I maintain the fortissimo until there is a change?)

[maestro1987]

It depends on what piece you are you talking about. Sometimes yes, phrase ending should be usually quieter. Experiment and listen.

[vincentl]

Here in this picture, from Bach's Minuet in G, after the 21st measure with the crescendo, do I return to Mezzo Forte at measure 22? Since I use Mezzo Forte from the previous measures before the 21st. In the crescendo for example, do I do a Mezzo Forte then gradually to a stronger dynamic then return to Mezzo Forte on the 22nd measure? Or do I maintain the last dynamic used from the crescendo?