Some friends were wondering, how the last piece on my CD Kamalenya could be recorded in one single take played by one single person.

It was not easy. Complete independence of the hands is a must. The left hand part between 1:23 and 1:43 or after 2:26 is very difficult and needs totally free and elastic wrists. (If you play the piano and happen to know Leopold Godowsky's Chopin-studies for the left hand then you know what I mean...)