"Big Boy" aka "I'm A Big Boy Now" , was the first single by the The Jackson 5 and the first song sung by Michael Jackson. "Big Boy was released by Steeltown Records, a record company in Gary, Indiana, in January 1968. After it was released, the song played on radio stations in the Chicago-Gary area and was a local hit. Beginning in March 1968, Steeltown Records sold thousands of copies of "Big Boy" nationally through a distribution deal with Atlantic Records, but it was neither a critical nor commercial success. The Jackson family, however, were delighted with the outcome nonetheless. The Jackson 5 would release a second single on the "Steeltown" label before signing with Motown Records in Detroit, in 1969. The group played instruments on many of their Steeltown compositions, including "Bi