Couple days ago I blogged about Creative Common licensed performances of classical music. I mentioned that it would be nice to hear Rachmaninov who died as Ola pointed 1943. So I found this helpful flowchart of US public domain (via boinboing). Now the question seems to boil to "was the registration renewed in a year preceding the 28 th anniversary of publication?". Propably it was. If you know, let me know.