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 Ali dropped an exhausted Foreman with a combination at center ring; Foreman failed to make the count. Against the odds, and amidst pandemonium in the ring, Ali had regained the title by knockout. Reflecting on the fight, George Foreman later said: "I thought Ali was just one more knockout victim until, about the seventh round, I hit him hard to the jaw and he held me and whispered in my ear: 'That all you got, George?' I realized that this ain't what I thought it was." Ali's next opponents included Chuck Wepner, Ron Lyle, and Joe Bugner. Wepner, a journeyman