Girolamo Frescobaldi was the most celebrated keyboard musician, teacher and composer in Italy in his day, serving various nobility and the Church in Rome from 1608 until his death in 1643. He had the greatest influence of any musician in the seventeenth century on the keyboard music of Germany, Austria, The Netherlands and Denmark. The music presented here is attributed to Frescobaldi from various manuscript sources dating between 1630 and 1650 and is not otherwise included in the volumes of his music printed during his lifetime.