But no, music lasted longer than anything it inspired. After LPs, cassettes, and CDs, when matrimony was about to decay into its component elements—alimony and acrimony—the songs startled him and regained all their previous, pre-Rachel meanings, as if they had not only conjured her but then dismissed her, as if she had been entirely their illusion. He listened to the old songs again, years later on that same dark promenade, when every CD he had ever owned sat nestled in that greatest of all human inventions, the iPod, dialed up and yielding to his fingertip’s tap. The songs now offered him, in exchange for all he had lost, the sensation that there was something still to long for, still, something still approaching, and all that had gone before was merely prologue to an unimaginably profound love yet to seize him. If there was any difference now, it was only that his hunger for music had become more urgent, less a daily pleasure than a daily craving.