NEW YORK — There’s a ghostly old flophouse on the Bowery. Rowdy brunch crowds stumble past its stained-glass windows and locked double doors. It’s lonesome but not empty. Radiators hiss in its cracked ...

Popping up on plywood boards throughout the Lower East Side are ghostly drawings of jazz musicians playing. The figures—each composed of a single unbroken line from a paint pen—are gestures from an ...