J is for jingles

...jingles and chimes and started down the hallway. 

"Don't you just love jingles and chimes? I do," she answered quickly. "Besides, they're very convenient, for I'm always getting lost in this big fortress, and all I have to do is listen for them and then I know exactly where I am." 

They entered a tiny cagelike elevator and traveled down for fully three quarters of a minute, stopping finally in an immense vault, whose long lines of file drawers and storage bins stretched in all directions from where here began to where there ended, and from floor to ceiling. 

"Every sound that's ever been made in history is...