you probably get this question all of the time, but what's the story behind the woman in the green dress singing this song?
When the Philadelphia Flyers hockey team played her rendition of "God Bless America" before their game on December 11, 1969, an unusual part of her career began. The team began to play the song before home games every once in a while; the perception was that the team was more successful on these occasions, so the tradition grew.
At the Flyers' home opener against the Toronto Maple Leafs on October 11, 1973, she made a surprise appearance to perform the song in person and received a tremendous reception. The Flyers won that game by a 2-0 score.
She again performed the song at the Spectrum in front of a capacity crowd of 17,007 fans before Game 6 of the Stanley Cup Finals on May 19, 1974 against the Boston Bruins. Boston's captain, Phil Esposito, infamously tried to jinx the Flyers' "good luck charm" by presenting her with a bouquet of roses after her performance. The Flyers won their first of two back-to-back Stanley Cups, winning that playoff series against the Boston Bruins 4 games to 2, with Bernie Parent shutting the Bruins out 1-0 in that game.
Smith also performed live at Flyers home games on May 13, 1975, when the Flyers beat the New York Islanders 4-1 to win Game 7 of the Stanley Cup semi-finals., and on May 16, 1976, before Game 4 of the Stanley Cup Finals, when the Flyers lost to the Montreal Canadiens 5-3 and were swept in that series.
Kate Smith was a recipient of the Presidents' Medal of Freedom, the highest award to an American civilian. She was a legendary performer starting with the early part of the century. Her version of the song was used in the late 60s by the team to spark interest in the anthem. The team won and it continued with four live performances (three wins in huge games) among many recorded versions.