Conversation so far:
when was Allen Toussaint born?
Allen Toussaint was born on January 14, 1938.
where was Allen Toussaint born?
Allen Toussaint was born in New Orleans.
who are Allen Toussaint's parents?
Allen Toussaint's mother, Naomi Neville, welcomed and fed all manner of musicians as they practiced and recorded with her son. His father, Clarence, worked on the railway and played trumpet.
does Allen Toussaint have any siblings?
Allen Toussaint is the youngest of three children.
what was Allen Toussaint's career?
Allen Toussaint was an American musician, songwriter, arranger and record producer.

Question: when did he start his career?
Self-contained rewrite: when did Allen Toussaint's start his career?