okay can someone explain what’s happening in this excerpt from Beethoven’s Moonlight Sonata? like, i know it’s going up then down and it’s using diminished chords but is there a fancier way of describing what’s happening here? i feel like there are several terms that apply here.

okay can someone explain whats happening in this excerpt from Beethovens Moonlight Sonata like i know its going up then down and its using diminished chords but class=