A Brahms piece that I'm working on for an upcoming recital. I just love playing this piece. Parts of it are so thick, the vibrations of the piano give me goosebumps when playing (e.g., at 1:33, 2:52, 4:07 and again at 5:02 in this video).
https://www.youtube.com/watch?v=VZ5A4ffWVuw
Another nice performance of the piece:
https://www.youtube.com/watch?v=78OO5v0lNtI