He claimed in his Toscanello in musica (1523) that he had been friends with Obrecht, Josquin, and Heinrich Isaac in Florence.
In February 1523 Aron went to Venice and became cantor of Rimini Cathedral, where he worked for Sebastiano Michiel, who was Grand Prior of the Knights of St. John of Jerusalem.
His earliest treatise, De institutione harmonica, on counterpoint, is written in Italian even though most scholarly writings of the time are in Latin.
Aron included tables of four-voice chords, the beginning of the trend which was to result in functional tonality in the early 17th century.
While Aron was known as a composer and frequently refers to his own works in his writings, only one possible composition of his survives, the doubtfully attributed four-voice frottola, "Io non posso piu durare", from Petrucci's Fifth Book of Frottole (1505).