It must grieve dead composers that their symphonies and concertos are regarded by the masses as perfectly suited for background music. The compositions worthiest of analysis go not only unanalyzed but almost unheard, merely filling awkward silence in elevators and waiting rooms, or setting a mood for sipping cocktails or making love. Subtlety and complexity in art sadly tend to undermine themselves. They cost more labor with less effect. They are hard to notice, in proportion as they are hard to create.