After years of training, Agata became a performing member in the institution's musical ensembles, called the coro; she later became a soprano soloist, singing teacher, and administrator.
Agata della Pietà is known to have written several musical compositions, including a setting of Psalm 134 Ecce nunc for compline.
Harpsichordist, Elizabeth Anderson completed a reconstruction of this work in 2022 and it was first performed by the Australian Chamber Choir in Melbourne in May 2022.
[1] Other known compositions are two Marian antiphons Regina Caeli and Salve Regina in the style of solo motets, as well as a solo motet titled Novo aprili in F (inscribed to one "Louisa"); only parts of these compositions survive today, although they demonstrate that Agata knew standard levels of composition in her time, including advanced techniques and professional levels of musicianship that equaled her contemporaries.
Agata was held at high esteem within the Ospedale della Pietà until the end of her life.