The song was written and produced by my friend Paul Mumford. If you want to find out more, google the words "Colliding Circles Paul Mumford" Having decided to have an extension built on to my house, I was informed by the local authorities that water pipes ran under the site and they would have to be exposed, inspected and protected. This video shows some of the steps involved. The guy in the yellow jacket is the inspector from the local water company. p.s. The extension is finished!