Listen to this excerpt from section a of chopin's étude in c minor. what is the function of the left hand in the following excerpt?

Anarrative piece of are ? a. tells a story or series of event b. serves as a remembrance of an event person c. display the likeness of a person, in order to document their existence d. relates the lives of important individuals

The dynamics of a musical piece refer to the a. key signature b. composer’s history c. volume changes d. instrumentation

1. according to bertrand, what is the purpose of relaying the story of samson at the beginning of the chapter? in other words, what does it have to do with the subject matter?