#1) Which section of a sonata-allegro movement used small pieces of the main theme in many different keys?
Answer: The section of a sonata-allegro movement that uses small pices of the main them in many different keys is the exposition. it presents the two usual main themes. The first one is in the tonic key and strong, rather dramatic melody. Then follows a short, very active section called the bridge or transition.
I hope it helps, Regards.
