Chopin Etude Op 10 No.4 is played so fast, the camera can barely film it.

The CD with Chopin and Schumann Etudes Symphoniques is released on Decca now! 85 minutes + ( plus 3 Nouvelles Etudes in digital album )

Sound samples here : http://www.prestoclassical.co.uk/r/Decca/4787697
or here ( different ones )
http://www.deccaclassics.com/us/cat/4787697?

To get it on iTunes https://itunes.apple.com/sg/album/chopin-schumann-etudes/id925326787