The Classical Style of Haydn, Mozart, and Beethoven

There's a great book by Charles Rosen called The Classical Style, which looks at the music of Haydn, Mozart, and Beethoven. And he basically looked how Beethoven uses the musical language of HayDN, Mozart,. and pushes it to certain kinds of limits and beyond though. So moving something instead of going to the dominant, there are modulates with the dominant. That's dominant to, tonic, to supertonic, to dominant to tonic. If you're going to go subdominant, there you have a play-go cadence, moving from the four to the one. It was like new information. I want to say maybe that was