After the break-up of MCA, Perenchio started Perenchio Artists with a partner in 1963. Its roster of clients included Andy Williams, Johnny Mathis, Henry Mancini, José Feliciano, Glen Campbell, Sergio Mendes, the Kingston Trio and the Righteous Brothers, among others, many of whom followed Perenchio from MCA. He eventually merged with the Hugh French Agency to form Chartwell Artists, which represented actors, directors, writers, musicians and singers. Perenchio's focus remained on live entertainment. In 1969, while in London with Henry Mancini, Perenchio was introduced to Elton John, who had just recorded his first album. By the following summer, in August, 1970, Perenchio brought John from London to Los Angeles and rented out the Troubadour club in Hollywood for two weeks to showcase John's talent. Word got out after the first performance and John became an overnight sensation, launching his career in the United States. Chartwell Artists grew to be the fifth-largest talent agency in the world. It was sold to International Creative Management (ICM) in 1972 when Perenchio decided to leave the agency business.