Lee Greenwood sang his iconic “God Bless the USA” between periods of the NHL’s 2015 “Winter Classic” outdoor game in Washington, DC on New Year’s Day, but the real treat came off-stage in a concourse at Nationals Park. Fortunately, it was recorded on a smart phone, so you can enjoy it this Independence Day. Gabrielle Dube, an intern for the event, posted it with this description: “After Lee Greenwood’s performance during the intermission, he met with the Military Choir to take pictures and it sparked an impromptu a cappella version of ‘God Bless the USA.’ Amazing!”