51 years ago, forty-thousand people poured into the Yankee Stadium for what would become one of the most historical concerts in Latin music history. By the time the Fania All Stars performed at Yankee Stadium in 1973, the salsa explosion had already become a mainstream phenomenon. Here we get a snapshot of a genre at its ultimate peak, and the performances are appropriately epic, from Celia Cruz’s 12-minute long “Bemba Colorá” to Héctor Lavoe’s moving “Mi Gente” — a Johnny Pacheco composition —