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George Foreman was reinvented, and the formerly aloof, ominous Foreman had been replaced by a smiling, friendly George. He and Ali had become friends, and he followed in Ali's footsteps by making himself a celebrity outside the boundaries of boxing. Foreman continued his string of victories, winning five more fights, the most impressive being a three-round win over Bert Cooper, who went on to contest the Undisputed Heavyweight title against Evander Holyfield. In 1990, Foreman met former title challenger Gerry Cooney in Atlantic City. Cooney was coming off a long period of inactivity, but was well regarded for his punching power. Cooney