Street piano

Who that has lived thirty years in the world has not discovered that Pleasure is coy; and must not be too directly pursued, but must be caught unawares? An air from a street-piano, heard while at work, will often gratify more than the choicest music played at a concert by the most accomplished musicians.

I keep my countenance, / I remain self-possessed / Except when a street piano, mechanical and tired / Reiterates some worn-out common song […]

But hist! the [marionette show] is going to begin. A lad is grinding a broken street-piano under the stage.