3 Things to Know About Mozart’s Piano Concerto No. 23

The concerto has three movements It opens with an Allegro in A major, followed by an Adagio in F-sharp minor, and ends with an Allegro assai in rondo form.

The central Adagio is in F-sharp minor This is an unusually dark key for Mozart, giving the movement a somber, bittersweet tone.

That Adagio is the emotional core It sets the whole concerto apart from Mozart’s sunnier piano concertos, adding a weight that lingers.