A teacher in Florence recognised the young Bartoletti's talent in music, and her husband, the sculptor Antonio Berti, recommended him to the Cherubini Conservatory.
Bartoletti later played in the orchestra of the Maggio Musicale Fiorentino, and subsequently became a staff pianist with the Teatro Comunale Florence, at its centre of vocal training.
He was an assistant to such conductors as Artur Rodzinski, Dimitri Mitropoulos, Vittorio Gui and Tullio Serafin.
In 1957, he became resident conductor of the Maggio Musicale Fiorentino, where his work included conducting the Italian premiere of Shostakovich's The Nose.
[3] He conducted several world premieres of works by composers such as Luciano Berio, Luigi Dallapiccola, Paul Dessau, Lodovico Rocca, Gian Francesco Malipiero, and Alberto Ginastera (Don Rodrigo, 1964).
[6] The Italian government had bestowed on Bartoletti the rank of Cavaliere di Gran Croce della Repubblica Italiana.