Question

How does the orchestral exposition of the first movement of mozartâs piano concerto in g major, k. 453 differ from the exposition in a symphony sonata-allegro?

Answer 1

The correct answer is - it remains in one key area.
The entire movement is performed in G major, k. 453, whereas the symphony sonata-allegro varies the keys it is performed in. The name says 'allegro,' which means 'lively,' and is characterized by fast pace in music, and the use of numerous keys.