how did he begin his career in singing?
By singing his debut single "Tomorrow (A Better You, Better Me)"
Tevin Campbell
Campbell's debut single was "Tomorrow (A Better You, Better Me)" which reached number 1 on the "Billboard" Hot R&B/Hip Hop Singles chart in June 1990
who sings stand out from a goofy movie Tevin Campbell is the movie based in any television series? Yes. On The Disney Afternoon television series "Goof Troop" who is this person you mentioned in your answer previously? American singer, songwriter and actor
wiki:20236123
Tevin Campbell [SEP] 1988–1990: Early career
In 1988, a friend of Campbell's mother arranged for him to audition for jazz flutist Bobbi Humphrey by singing over the phone to her in New York. Humphrey took an interest in Campbell and submitted an audio and videotape to Warner Bros. This led to a meeting with Benny Medina, the Warner's senior vice president and general sales manager of black music. Campbell was introduced to the R&B world by Quincy Jones in August 1989. Campbell's debut single was "Tomorrow (A Better You, Better Me)" which reached number 1 on the "Billboard" Hot R&B/Hip Hop Singles chart in June 1990.