The Jackson 5 (also spelled The Jackson 5ive, abbreviated as J5, and later known as The Jacksons) were an American popular music act, whose repertoire combined R&B, soul, funk, and later disco. All but two members of the group (early members Johnny Jackson and Ronnie Rancifer) were the male children of Katherine and Joseph Jackson (who served as the boys' manager): Jackie, Tito, Jermaine, Marlon, Michael, and Randy, who replaced Jermaine in 1975. Originally signed to the Motown label before switching to CBS Records in 1975, the Jackson 5 were one of the most popular groups of the era, eventually selling over 100 million records worldwide and becoming the only performers to have their first four singles reach the top of the American charts.