The saying goes, a picture paints a thousand words. But a photo that ran recently in the New York Times paints something more like a multi-tomed history of art music. The photo, which accompanied a story about pianist-conductor Jeffrey Kahane's recent performances with the New York Philharmonic, shows Kahane conducting from the harpsichord with the help of a musical score - on an iPad. Take a look, and read more: Classical conducting? There's an App for That (NYT)