J. S. Bach: Air on the G String (piano)
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