Yes, I like Rautavaara too, but I would not dare try to utter his first name. The same goes for the English composer Kaikhosru Shapurji Sorabji. Even the names of his works can be a bit daunting (not to mention the length and complexity of most of his works. I particularly like his piano piece "Opus Clavicembalisticum" but I can never listen to it completely in one sitting (over four hours long).
I own all Sorabji pieces...
Try the 100 transcendental studies...Buy Ullen version...
Amazingly out if this world... Madness allied to genius...
My deepest respect to you...