Every year on a selected Monday, children and adults from across Canada's five time zones engage in a unique community-building ritual: they sing a song specially written for the event -- at the exact same time, together. For 2013, the voices of Canadians on the ground were joined by Cammander Chris Hadfield of the International Space Station. Chris wrote the 2013 song with Barenaked Ladies frontman Ed Robertson to capture the wonder of seeing the earth from space. This video highlights the earth - space collaboration as Chris and Ed perform with the Wexford Gleeks choir. As Chris sings, "I can hear your voices bouncing off the moon."