Canon? (Unless you're talking specifically about the 1812 overture. :-) ) I wonder how copyright extension has affected this phenomenon. Works taking decades l

Canon? (Unless you're talking specifically about the 1812 overture. :-) ) I wonder how copyright extension has affected this phenomenon. Works taking decades longer to enter the public domain, leading to the existing public domain (old) music becoming even more solidified as classical canon? If anybody knows about this I'd love to hear more.