Fantastic Thank you That s extremely helpful That biography contains details of his early and late life that do not exist in the other sources I ve got his time in Paris pretty well fleshed out Slonimsky s reminiscences in Perfect Pitch are full of juicy details I m still trying to understand all the Orthodox religious references in some of my other sources e g two resurrections I m a little out to sea on some of that It s hard to write about his 12 tone method without doing forbidden original research because it seems no one has really studied it in depth Sitsky maybe more than anyone else I really want to look at one of the scores Now if only I had a public domain illustration or two Anyhow now I can cite that biography thanks to you I m presuming that the World Encyclopedia in Russian is a reliable source Everything sounds right and matches up with Grove and the others I ve got Cheers talk