Rachmaninoff Prelude C-Sharp Minor

Question 1

1

Answer 1

Starts off in octaves on C# minor, down to A, down to G#, then up to chords
E G# + C#- Chord

Question 2

2

Answer 2

mm 4
Goes from C#- chord up to a B + C# LH to G# on top
The down to a C natural, B natural, back to E natural with weird E chord and D# chord