I rather like his work and am always pleased when I stumble across one of his paintings in a museum.
The settings Dewing chose varied. Below are examples of women shown with musical instruments -- one of his major themes. They are arranged in approximate chronological order.
This was before he settled on his gauzy style.
This is clearly mainline Dewing. Note the lack of a realistic background.
Here he combines two of his themes -- a woman with a musical instrument and women in a outdoor setting.
This is more hard-edge than usual.
Also painted more crisply. Perhaps he was considering backing away from his signature style at this time.
Now Dewing drifts back to fuzzy, nondescript backgrounds.
In his outdoor scenes Dewing often had his women as small elements of the overall painting. Here he tries it in an indoors setting.
This is the latest (approximately) dated image of this set.
These two paintings did not have dates associated with them. However, they were likely made in the early 1900s.