The Radio Lab podcast is re-running HV’s “City X” by Jonathan Mitchell, which da Lab rats describe as:

A history of the modern shopping mall through perspectives of people living in a real, yet unnamed, city. Using a sound rich audio mosaic of observations and ruminations, all scored to Muzak, the universal mall experience comes to life, for better or for worse.

“TitleOfMP3″ (25:17 mp3):