hpaulj wrote:The piano score that I have attributes the copyright to Edward B. Marks Music Company (1928) (with all the renewed and international additions).
But I wonder how the copyright applies to arrangements and adaptations for other instruments. is there some sort of threshold in much you borrow or remain faithful to the original?
Absolutely not. Arrangements and/or adaptations - simple, complex, or otherwise, do not negate the copyright.
There is one possibility. Since Marks Music apparently owns the copyright, then Lecuona either sold it to them, or ceded it to them in return for publishing the work. If they are the copyright owners, then under the copyright law in existence at the time, they could have only renewed it once, and it would be now in public domain. I suspect that is the case.
Even under current USA copyright law it would be in public domain, since Marks Music is not the author, and so "Author's lifetime plus seventy years" would not apply. I have a strong feeling that it is in public domain.
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