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 vs. Ken Norton winning the bout by first-round knockout. For his second defense, Foreman was matched up against Ken Norton for a March 1974 bout held in Caracas, the capital and largest city in Venezuela. Norton was coming off two successive fights against Muhammad Ali in 1973, winning the first fight in March by split decision (famously breaking Ali's jaw in the process), and then narrowly losing the second by another split decision in September. Norton's impressive performances against Ali made him one of the top heavyweight contenders for Foreman's titles, but the future hall-of-famer was installed as a 3–1 underdog against the