which two forms from this lesson cannot be diagrammed with a traditional letter diagram?the dynamics are used to create a feeling of calm. in individual sections, there are few changes to the dynamics, as the entire piece is soft and moody. in general, the piece stays relatively the same from beginning to end.the dynamics are used to heighten the excitement of the piece. in individual sections, there are many crescendos, followed by sudden, softer sections. in general, the piece moves from a softer beginning into a gradual crescendo throughout the piece.the dynamics are used to create excitement early in the piece, then to create a resolution of feeling. in individual sections, there are few crescendos or changes in dynamics. in general, the piece has a lively start, then uses a series of decrescendos to create a calm and serene finish.