Pictures of the Day: Two Vermeer Paintings

While in London, though there weren't lots of 'must do's on my list, I did have a few wishes, and National Gallery on Trafalgar Square was one of them. 
I just wanted to see the two paintings by Vermeer being there...  (I am, after all, on a quest, about seeing every single one of the known Vermeers!)
I did see them.  Strangely enough, they weren't in the same room, so I ended up going back and forth between them several times, just to compare, look for similiarities and differences etc.
Here they are: 
"Lady Seated at a Virginal" and "Lady standing at a Virginal".  They are both painted in the beginning of the 1670's, by Johannes Vermeer, who lived in Delft, Holland.

They are typical Vermeer paintings, by being interior scenes, each featuring a woman, and with strong blues and yellows.  I'm intrigued by the way these two girls are looking directly at us, almost as if they are interrupted by us, maybe asking us : "Did you have a question?" I can almost feel they are a little bit annoyed, the same way I am when I'm interrupted while practicing the cello...

Anyway, I gazed at these two paintings for the longest time, going back and forth, sitting down, trying to see every single detail, every streak of light, and - I was touched.  Art does that to me.