Listen to Partita in B-Flat Major, BWV 825: I. Prelude online. Partita in B-Flat Major, BWV 825: I. Prelude is an English language song and is sung by James Rhodes. Partita in B-Flat Major, BWV 825: I. Prelude, from the album 50 Ultimate Piano Classics, was released in the year 2014. The duration of the song is 3:18. Download English songs online from JioSaavn.