Very difficult etude even at this speed. Double notes take serious practice if you can do this then try Liszt transcendental no 5 it's like this but on steroids lol. I've always stayed away from double note etudes I haen't got the patience for the technique I'm ok at them now but it takes months if not years to build such dexterity. Fair play to you !
Thank you so much! I actually can send a link to a public performance I did of his music at Victor Borge concert hall in NYC. I so appreciate your listening and glad you enjoyed his music!