Harmony And Tonality

Question 0

Is the piece chromatic or diatonic?

Answer 0

Diatonic

Question 1

What key is it in and what keys does it modulate to?

Answer 1

A major
Modulates to E major (dominant) in bar 21
To B major (secondary dominant) in bar 67
Back to E major in bar 91and the A major until end in bar 103

Question 2

In what cadence does the piece end?

Answer 2

Plagal cadence (IV:I)