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 a comeback in the tenth round and hit Moorer with a number of punches. Then a short right hand caught Moorer on the tip of his chin, gashing open his bottom lip and he collapsed to the canvas. He lay flat on the canvas as the referee counted him out. In an instant, Foreman had regained the title he had lost to Muhammad Ali two decades before. He went back to his corner and knelt in prayer as the arena erupted in cheers. With this historic victory, Foreman broke three records: he became, at age 45, the oldest fighter ever