This sonata marks Beethoven's transition to late-period style, featuring experimental structures and intimate expression. The fourth movement's fugue foreshadows his monumental Hammerklavier Sonata.
Beethoven's Piano Sonata No. 28, Op. 101 is notable for its experimental structure,
merging a sonata-form finale with a fugal development section—a bold synthesis of Classical
and Baroque techniques that foreshadows his late-period style.
