Thank you, Peter! I don't agree with you completely. The key is changing in this piece of music because it starts with E minor and ends with E major. The previous music, you mentioned (The Spirit of the Lake) has a middle part, which is in B minor, and the whole piece of music starts with E minor, ends with B minor. These are modulations. 🙂 I'm glad, you could appreciate my work, and thank you again for your comment!