Fiori musicali (lit. 'Musical Flowers') is a collection of liturgical organ music by Girolamo Frescobaldi, first published in 1635. It contains three organ masses and two secular capriccios. Generally acknowledged as one of Frescobaldi's greatest works, Fiori musicali influenced composers during at least two centuries. Johann Sebastian Bach was among its admirers, and parts of it were included in the celebrated Gradus ad parnassum, a highly influential 1725 treatise by Johann Joseph Fux which was in use even in the 19th century.