The 1979 World Series was the championship series of Major League Baseball's (MLB) 1979 season. The 76th edition of the World Series was a best-of-seven playoff played between the National League (NL) champion Pittsburgh Pirates (98–64) and the American League (AL) champion Baltimore Orioles (102–57). The Pirates won in seven games, becoming the fourth team in World Series history to come back from a three-games-to-one deficit to win the Series. This marked the second time in the 1970s the Pirates won a World Series Game 7 on the road against the Orioles, the previous time being in the 1971 World Series. The Pirates were famous for adopting Sister Sledge's hit song "We Are Family" as their theme song during the 1979 season.