I did a search on the forum and only came up with a mentioning of this exercises but nothing further. I was wondering if anyone here plays them? They look like a sophisticated warm-up, nowhere near the complexity of Brahms 51 or Liszt exercises tho. But they look a lot with what I always do when I sit down at the bench Finger independence, finger mental practice and stretching (I had one go at them before a chopin etude practice and I could clearly notice the improvement). Anyway, thoughts!