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
Muhammad Ali corner, Ali retreated to the ropes and invited Foreman to hit him while covering up, clinching and counter-punching, all while verbally taunting Foreman. The move, which would later become known as the "Rope-a-dope", so violated conventional boxing wisdom—letting one of the hardest hitters in boxing strike at will—that at ringside writer George Plimpton thought the fight had to be fixed. Foreman, increasingly angered, threw punches that were deflected and did not land squarely. Midway through the fight, as Foreman began tiring, Ali countered more frequently and effectively with punches and flurries, which electrified the pro-Ali crowd. In the eighth round,