The answer is:
- Piano concertos
- String quartets
- Symphonies
Mozart is renowned for his piano concertos, having composed 27 of them. These works are celebrated for their melodic beauty, structural innovation, and the way they showcase the piano as a solo instrument.
Mozart made significant contributions to the string quartet genre, composing 23 quartets. His works in this category are noted for their complexity, emotional depth, and the interplay between the four instruments.
Mozart composed over 40 symphonies, which are considered some of the greatest in the classical repertoire. His symphonies are known for their formal perfection, expressive range, and orchestral color.
While Mozart excelled in opera, this category is not instrumental music. His operas, such as "The Magic Flute" and "Don Giovanni," are highly acclaimed, but they do not fit the category of instrumental music.
Cantatas are vocal compositions with instrumental accompaniment, and while Mozart did compose some, they are not his primary focus nor are they purely instrumental.