To the very young Leonard Bernstein--""Lenny""--, the new piano was the supreme luxury from which he knew he would receive hours of enjoyment. So begins, and so ends this drab little book. It seems that the artist's primary objective was to cover pages entirely with cardboard figures and flat objects which he executed in two tones of brown. Rambunctious children will undoubtedly grow restless in the company of the sedate Lenny.