After a brief adagio prelude, the second part, "Summer," opens with a charming aria by Simon ("From out the Fold the Shepherd drives"), which gives us a delightful picture of the shepherd driving his flock along the verdant hillside, then leaning upon his staff to watch the rising sun. As it appears, it is welcomed by trio and chorus with the exultant shout, "Hail, O glorious Sun!" As noon approaches, the music fairly becomes radiant. A series of recitatives and arias follow, bringing out in a vivid and picturesque manner the oppressive, exhaustive heat and the longing for rest and shade, leading at last to an ominous silence as the clouds begin to gather and the sky darkens. A short recitative prepares the way. A crash of thunder is heard upon the drums: it is the prelude to the storm-chorus ("Hark! the deep tremendous Voice"), which has been the model for nearly all the storm-descriptions written since Haydn's time. It is worked up to a tremendous climax of tumult and terror, of pouring rain, flashing lightning, and pealing thunder. At last the tempest dies away, and in the trio and chorus, "Now cease the Conflicts," night comes on, with its song of the quail,--which Beethoven subsequently utilized in his Pastoral Symphony,--the chirp of the crickets, the croaking of the frogs, the distant chime of the evening bells, and the invocation to sleep. Of the frog episode, Nohl says:-- "He particularly disliked the croaking of the frogs, and realized how much it lowered his art. Swieten showed him an old piece of Gretry's in which the croak was imitated with striking effect. Haydn contended that it would be better if the entire croak were omitted, though he yielded to Swieten's importunities. He declared afterwards, however, that the frog passage was not his own. 'It was urged upon me,' he said, 'to write this French croak. In the orchestral setting it is very brief, and it cannot be done on the piano. I trust the critics will not treat me with severity for it. I am an old man, and liable to make mistakes.'"