 She is recorded as singing at many court entertainments and weddings up until 1620, and was in the service of the Medici her whole career.Many composers wrote for her, including Sebastian Raval and Luca Marenzio, as well as, of course, her husband and Cavalieri.Giulio Caccini and Jacopo Peri claimed that she had sung their music, in order to help their claims to supremacy in composition, as well as to being the best writers in the "seconda prattica" style.