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 the ropes with a flurry to Foreman's head, punctuated by a hard right cross that landed flush on the jaw, knocking Foreman down. Muhammad Ali was the first boxer to stop Foreman. Foreman later reflected that "it just wasn't my night". Though he sought one, he was unable to secure a rematch with Ali. It has been suggested in some quarters that Ali was ducking Foreman, although he did give a rematch to Joe Frazier and to Ken Norton. Ali also preferred to fight such "minimal risk" opponents as Chuck Wepner, Richard Dunn, Jean Pierre Coopman, and Alfredo Evangelista. Foreman