Héctor Lavoe a guest singer with the Fania All-Stars for several shows. One of the group's notable performances took place in the Kinshasa province of the Zaire (modern day Democratic Republic of Congo) where the group performed as part of the activities promoting The Rumble in the Jungle, a boxing fight between Muhammad Ali and George Foreman for the heavyweight championships of the World Boxing Council and World Boxing Association. The Fania All Stars recorded several of their tracks during live concerts. Lavoe was part of the group when the All-Stars returned to Yankee Stadium in 1975, where the band recorded a
George Foreman Rican Heavyweight Champion José Roman. Roman was not regarded as a top contender, and it took Foreman only 2 minutes to end the fight, one of the fastest knockouts in a Heavyweight Championship bout. Foreman's next defense was against a much tougher opponent. In 1974, in Caracas, Venezuela, he faced the highly regarded future hall-of-famer Ken Norton (who was 30–2), a boxer noted for his awkward crossed-arm boxing style, crab-like defense, and heavy punch (a style Foreman emulated in his comeback), who had broken the jaw of Muhammad Ali in a points victory a year earlier. Norton had a good