At all, I don't play notes. And I don't even use flat and sharp chords, I do not know how — only the simplest. Well, mostly, square C-F-GF-C. All in all, Sort of, how Sherlock Holmes played the violin — for meditation.
On video движения рук и звуки могут не совпадать, since the music was recorded on a laptop, and video on the phone. Then he brought everything together in the computer :)
Tchaikovsky was explicitly used from about the third and a half minutes to about the 5th, а так в основном, подсознательный. Therefore, it may seem to someone that this is not Tchaikovsky at all.. But, about tastes, as they say, do not argue.
Update 02:15
And also another meditation on the theme of the melody, которую сам придумал. Not like that, certainly, global as above, but you can also see.