Complex sentence: She sang since childhood, and in 1935, she won the contest "Puloil", and performed on Radio Belgrano, Argentina's largest radio broadcaster at the time, which allowed her to be hired as a singer on the station.
Split into simpler sentences: She sang since childhood, and in 1935, won the contest "Puloil". She performed on Radio Belgrano, Argentina's largest radio broadcaster at the time, which allowed her to be hired as a singer on the station.