THE PIANIST KIM CHEOL WOONG, whom Melanie Kirkpatrick wrote about in “Escape from North Korea,” will be here in the D.C. area to play two performances this weekend. One will be at the “home theater” of conductor Lorin Maazel, of all people, in Castleton, Virginia, on Saturday evening. The other will be on Sunday, March 24th, and will be sponsored by a new group, NKUS (site in Korean only). Henry Song of the North Korean Freedom Coalition calls them the...