Do you hear the sounds of progress?

We get some background music on today's show.Today I talk about the ever-present music of machines we all live with, here in Shanghai. It's wonderful to wake up in the morning to the sound of drills and electric hammers.As annoying as all this 'progress' is for us temporary residents, it's got to be even harder for the Shanghainese, who see the landscape around them torn up and changing. That's the theme I touch on, briefly, in today's episode.I still haven't quite figured out the levels bit... although, to be honest, I haven't been trying too hard. It should be okay, though.Four episodes and counting...tek.