I never talk about age, but I was born singing. My mother, Catalina, told me that at 9 or 10 months of age I’d wake up in the middle of the night, 2 or 3 in the morning, singing "esta muchachita va a trabajar de noche". Pues la viejita no se equivocó.
Notes from Wikiquote
A similar statement in shown in the BBC Arena documentary "My Name Is Celia Cruz" from 1988.