Question: The Jackson 5, a popular American family music group formed in 1964 but in which year did the younger band member Michael Jackson pursue a solo career while still part of the group?
Sentence (from "List of The Jackson 5 band members"): The band member history of American R&B and pop group The Jackson 5 shows how the band has comprised different members of the Jackson family at various times during its chronology, with differing names as The Jackson Brothers (1964–1965), The Jackson 5 (1965–1975, with Motown) and The Jacksons (1975–1989, with CBS).
Relevant evidence: No