Regarding Classical sonatas of this type, the crucial point is to maintain a consistent tempo throughout. The tempo should not vary, for instance, by being slow here and fast there. A common occurrence is that measures or sections with many notes tend to slow down, while those with fewer notes tend to speed up. This third movement, being in 2/4 time and marked Presto, is relatively easy to maintain a consistent tempo throughout. Strive to maintain a single, consistent tempo.Another point to be mindful of is the fermata. The duration of a Classical fermata differs slightly from that of a Romantic fermata. Classical fermatas are shorter than Romantic ones; as a guideline, consider extending the note or rest by approximately 1.5 times its original duration. Be careful not to prolong it excessively.Another often-overlooked point is the counting after a fermata. Please refer to measure 56. A fermata is placed over a quarter note. The moment it concludes, you should immediately count the subsequent eighth rest and then proceed to the sixteenth notes. Just because a fermata extends a note does not mean the surrounding passage should slow down; remember to resume counting immediately after the fermata ends. Furthermore, ensure that counting is not interrupted, such as during rests spanning one or two measures.This third movement is highly optimistic and brimming with Haydn's unique sense of humor. When Haydn truly intended a tempo change, he indicated it with 'Adagio,' and fermatas are used where he desired a slight pause or 'breath.' These indications gain their significance precisely because the tempo is otherwise consistently maintained.