That mysterious rag

Gift of Dr. Mary Jane Esplen.Piano and voice. [instrumentation]C major [key]Allegro moderato [tempo]Popular song. [form/genre]Woman playing piano, man standing ; Portrait of Dena Caryl. [illustration]E. Pfeiffer, New York. [engraver]Ted Snyder Co., New York. [dealer stamp]Varying publisher's advertisements on inside and back covers. [note