Here’s my big-boy project, my own Beethovenian classical sonata with hints of modern harmony. I have tinkered on this beast for years, and sometimes still do since I have retained the Musescore files.
Luckily, I can provide both the PDFs and the midis for this work separated by movement.
This is definitely the hardest thing I have written; its vigorous first and third movements demand quite a lot of endurance. Best of luck to you if want to play it. Hopefully I’ll replace the midis here with real recordings one day.