Here's me playing Beethoven's Moonlight Sonata, which is one three pieces that got me into Classical music (and eventually piano lessons, classical music theory, etc). The other two pieces are the Adagio of Mozart's 23rd Piano Concerto and Chopin's Number 15 "Raindrop" prelude.
This was recorded live on the first try (I was expecting dozens before I got a good take, but got lucky!)