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
The Rumble in the Jungle was nonetheless underestimated by Frazier and his promoters, and knocked the champion down six times in two rounds before the bout was stopped. He further solidified his hold over the heavyweight division by demolishing the only man besides Frazier at the time to defeat Ali, Ken Norton, in two rounds. At 25, the younger and stronger Foreman seemed an overwhelming favorite against the well-worn 32-year-old Ali. Foreman and Ali spent much of the middle of 1974 training in Zaire, getting acclimated to its tropical African climate. The fight was originally set to happen on September 25, but Foreman was cut