No. 21 is the Waldstein. No. 23 is the Appassionata. No. 26 is Les Adieux. No. 29 is the Hammerklavier. And no. 27 just sounds good 🙂

Beethoven had some very nice earlier sonatas (no. 1, no. 8, no. 14, no. 17, to name a few), but nothing matches the depth of the 20s.