DuPhly was born in the transitionary period between the Baroque and Classical eras, and it's really fascinating to see it reflected in his music. His first book was late baroque Baroque in style, his second and third books featured stylistic elements of the Gallant style, and this fourth book is very distinctly early Classical.
It should be Livre 4, not Livre 3 as in the description. Just pointing out. Isn't it wonderful that all these videos have absolutely no dislikes? Wonderful music.