Listen to 2-Part Invention No. 9 in F Minor, BWV 780 online. 2-Part Invention No. 9 in F Minor, BWV 780 is an English language song and is sung by Zuzana Ruzickova. 2-Part Invention No. 9 in F Minor, BWV 780, from the album Bach: The Complete Keyboard Works, was released in the year 2016. The duration of the song is 2:37. Download English songs online from JioSaavn.