NEW YORK — The brooding waltz was carefully composed on a sheet of music roughly the size of an index card. The brief, moody number also bore an intriguing name, written at the top in cursive ...

Among postcards signed by Picasso and letters ... complicated music by Chopin,” Lang Lang says. “But it is one of the most ...

McClellan asked Chopin expert Jeffrey Kallberg, associate dean for arts and letters at the University of Pennsylvania, to ...