The maid had given the children their suppers and was supervising their baths when Irene turned on the radio, reduced the volume, and sat down to listen to a Mozart quintet that she knew and enjoyed. The music came through clearly. The new instrument had a much purer tone, she thought, than the old one. She decided that tone was most important and that she could conceal the cabinet behind a sofa. But as soon as she had made her peace with the radio, the interference began. A crackling sound like the noise of a burning powder fuse began to accompany the singing of the strings. Beyond the music, there was a rustling that reminded Irene unpleasantly of the sea, and as the quintet progressed, these noises were joined by many others. She tried all the dials and switches but nothing dimmed the interference, and she sat down, disappointed and bewildered, and tried to trace the flight of the melody. The elevator shaft in her building ran beside the living-room wall, and it was the noise of the elevator that gave her a clue to the character of the static. The rattling of the elevator cables and the opening and closing of the elevator doors were reproduced in her loudspeaker, and, realizing that the radio was sensitive to electrical currents of all sorts, she began to discern through the Mozart the ringing of telephone bells, the dialing of phones, and the lamentation of a vacuum cleaner. By listening more carefully, she was able to distinguish doorbells, elevator bells, electric razors, and Waring mixers, whose sounds had been picked up from the apartments that surrounded hers and transmitted through her loudspeaker. The powerful and ugly instrument, with its mistaken sensitivity to discord, was more than she could hope to master, so she turned the thing off and went into the nursery to see her children.