Her musical career began in 1944, during the war, when she debuted in a Red Cross charity show. Her stage name Sandon's came by chance - it was an oversight by the illustrator who prepared her first record cover.
Celebrity came in 1952 thanks to the movie Anna directed by Alberto Lattuada and starring Silvana Mangano, Vittorio Gassmann and Raf Vallone. Flo Sandon's did not appear in the movie itself, but she performed two songs of the movie sound track, T'ho voluto ben and El negro Zumbon. Both were great hits. Nat King Cole liked so much T'ho voluto ben that a few years later he reco ...
In 1953 Flo Sandon's took part to San Remo Music Festival for the first time, and won. The song was Viale d'autunno and was also performed by another singer, Carla Boni. Both winners were at their first appearance at the popular song contest, and succeeded ahead of the great favorite Nilla Pizzi. The press rumored about a possible plot against Pizzi: allegedly she had been originally chosen to perform Viale d'autunno but was then dismissed, possibly out of spite or jealo ...