Ten years ago today, we installed these beautiful bird cages in Angel Place. "Forgotten Songs" by Michael Thomas Hill was only supposed to be a temporary addition to the laneway, but the artwork proved so popular that we made it a permanent fixture during our 2012 upgrade of Angel Place. It's a really moving piece. As you walk under the empty cages, you can hear the calls of fifty birds once heard in central Sydney, before they were gradually forced out following European settlement. It forces u