[youtube=http://www.youtube.com/watch?v=2j9wvUy5FmA] Above: “Le Soleil et La Lune” by Charles Trenet In 2010, NPR is going to do a recurring series about the world’s best vocalists. Of couse, that’s a highly subjective and ultimately crazy goal, but in the time being, they’ve got an interactive tool to help them pare the list down with biography, photos,…