Growing up, Bueno worked as a paperboy at the newsstand of his grandmother, Hortensia. In 1984, he attended concerts of the local band Chébere and was occasionally invited to join them on stage. The next year, he dropped out of school and started working at his father's record shop, where he sometimes sang for the customers.
Bueno's childhood involved delivering newspapers at his grandmother's newsstand, attending concerts by the local band Chébere, and occasionally performing on stage with them. He later left school to work at his father's record shop, where he entertained customers with singing.