Can Joshua Bell, one of the nation's great musicians, cut through the fog of a D.C. rush hour? Let's find out. (Video: The Washington Post) It was 7:51 a.m. on Friday, January 12, the middle of the morning rush hour. In the next 43 minutes, as the violinist performed six classical pieces, 1,097 people passed by. Almost all of them were on the way to work, which meant, for almost all of them, a gov