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 dubbed the rope-a-dope). As a result, Foreman spent his energy throwing punches (without earning points) that either did not hit Ali or were deflected in a way that made it difficult for Foreman to hit Ali's head, while sapping Foreman's strength due to the large number of punches he threw. This loss of energy was key to Ali's "rope-a-dope" tactic. Meanwhile, Ali took every opportunity to shoot straight punches to Foreman's face (which was soon visibly puffy). When the two fighters were locked in clinches, Ali consistently out-wrestled Foreman, using tactics such as leaning on Foreman to make Foreman support