The weird weekend weather had temperatures as much as 30 degrees below normal in parts of the West and 30 degrees above normal in the East, said CNN meteorologist Jenny Harrison.

CNN: Weird weather: Temperature extremes coast to coast

According to many of the musicians and teachers we spoke with, Yamaha makes the most innovative digital pianos, so we asked Ms. Dinnerstein to meet at a dealer, Faust Harrison Pianos, on New York's "Piano Row, " on West 58th Street.

WSJ: Digital Pianos: Great Performers for Tight Spaces