Giovanni Battista Doni

Giovanni Battista Doni (bap. 13 March 1595 – 1647) was an Italian musicologist and humanist who made an extensive study of ancient music. He is known, among other works, for having renamed the note "Ut" to "Do" in solfège.

In his day, he was a well-known lawyer, classical scholar, critic and musical theorist, and from 1640 to 1647 he occupied the ''Chair of Eloquence'' at the University of Florence and was a prominent member of the city's Accademia della Crusca, the premier academic philologic society of Florence and Italy at the time. They had published the first Italian-language dictionary and grammar in 1612. Provided by Wikipedia