Thanks for listening. I'm not a coffee drinker but I guess my playing is sometimes caffine infused. I see where you're comming from with improvised atonality, as it is usually not pure atonality but rather mixed with tonality to give greater harmonic language.
I should really get myself to listen to some Jarrett, as I think in one of my previous posted improvs you also indicated a likeness to Jarrett.
At times, yes I do improvise on tone rows, but this isn't one of them. One thing that I always do when improvising is listening for themes or ideas that sound good, and when I find one I try to develop it. I'm always on the lookout for new ideas, sometimes they come when practcing or just doodling on the keys. Sometimes I hear something on recordings or movies that I like and try to imitate it on piano. I also use the feel of the keyboard to inspire new ideas that would be unique to the piano.
The particular technique I used in this piece, I think I picked up from scary or intense scenes in various films. I like to call it "organized chaos". The hands are constantly alternating, with only one note playing at a time. I select a particular range on the keyboard - every range has it's own characteristics and different ranges can have very different overall sounds. The hands constantly alternante but fall on random keys within the set range.
The section you speak of at 3:37 is a borrowed minimalist technique. I play around with hemiolas. I play 4 in the RH and 3 in LH, it cycles and it repeats and after a number of cycles the pattern repeants again. You can then add or subtract the number of notes independently for each hand
Eg:
RH 4, LH 3
RH 5, LH 3
RH 5, LH 4
RH 6, LH 4
RH 6, LH 5, etc.
By using this technique in addition to alternating between hands, you have the independent melodic lines of the RH, LH and resultant melodic line from combining RH and LH.
I'm always on the lookout for wicked improv sounds, and when I find one I examine and develop it to it's fullest extent.
Derek, looking forward to hearing your new Petrof. Unfortunately I didn't have opportunity to try one in my search for a grand.