And so, free of preconceptions, Strawinsky was able to let nature move him to imitation. Just as Picasso brings twentieth-century nature into his still lives, so the young composer brings it into his music. It is the rhythm of machinery that has set Strawinsky the artist free. All his life he has been conscious of these steel men. Mechanical things have influenced his art from the beginning. It is as though machinery had revealed him to himself, as though sight of the functioning of these metal organisms, themselves but the extension of human bones and muscles and organs, had awakened into play the engine that is his proper body. For, as James Oppenheim has put it in the introduction to "The Book of Self," "Man's body is just as large as his tools, for a tool is merely an extension of muscle and bone; a wheel is a swifter foot, a derrick a greater hand. Consequently, in the early part of the century, the race found itself with a new gigantic body." It is as though the infection of the dancing, lunging, pumping piston-rods, walking beams, drills, has awakened out of Strawinsky a response and given him his power to beat out rhythm. The machine has always fascinated him. One of his first original compositions, written while he was yet a pupil of Rimsky-Korsakoff's, imitates fireworks, distinguishes what is human in their activity, in the popping, hissing, exploding, in the hysterical weeping of the fiery fountains, the proud exhibitions and sudden collapses of the pin-wheels. It is the machine, enemy of man, that is pictured by "The Nightingale," that curious work of which one act dates from 1909, and two from 1914. Strawinsky had the libretto formed on the tale of Hans Christian Andersen which recounts the adventures of the little brown bird that sings so beautifully that the Emperor of China bids it to his court. Strawinsky's nightingale, too, comes to the palace and sings, and all the ladies of the entourage fill their mouths with water in the hopes of better imitating the warbling of the songster. But then there enter envoys bearing the gift of the Emperor of Japan, a mechanical nightingale that amuses the court with its clockwork antics. Once more the emperor commands the woodland bird to sing. But it is flown. In his rage the emperor banishes it from his realm. Then Death comes and sits at the emperor's bedside, and steals from him crown and scepter, till, of a sudden, the Nightingale returns, and sings, and makes Death relinquish his spoils. And the courtiers who come into the imperial bedchamber expecting to find the monarch dead, find him well and glad in the morning sunshine.