I'm a 20th century music fan, living in Massachusetts, and I search for as many available scores from this period as possible for study. However, since there is a difference in copyright lenght between Canada and America, many works which are opened for use in Canada are not PD in the US, and I often have to waste time clicking every listed work by a composer to see whether it can be used or it's TB. So, is there a way to narrow my search down only to compositions which are PD in America? If there is no such option, can I request it, this would save time to me and many other musicians searching for 20th century music from the US.
Thanks
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