Johann Sebastian Bach wrote this piece for his Orchestral Suite No. 3 in D major, BWV 1068. August Wilhelm modified the composition in 19th century, but I play the D major original on my Yamaha P140 digital piano.Be sure to choose high quality link under video (if available) to hear much better stereo sound.If you want only to listen, I recommend to download high-quality MP3 files from SkyDrive: http://jdem.cz/bxyk5