Pretty much as I wrote; that, however, is quite different from placing it all in the public domain, which he has a perfect right to do but has not done.

As it happens, Leo Ornstein's music is for the most part NOT in the public domain; on the contrary, a statement on this has been issued on IMSLP, namely that "Mr. Severo Ornstein, the composer's son and copyright owner, has graciously granted permission for Leo Ornstein's works to be posted at IMSLP"; that is not synonymous with placing said works in the public domain which, in most cases and in most territories, they will enter at the close of 2072.

Wrong. Weirdly inconsistent with other countries' copyright laws and terms though US' ones are, OC was published in 1931 so remains in copyright there.

Mr Ornstein has a perfect right - and an exclusive one - to place his father's work in the public domain if so he chooses, just as I have a right not to do so.

There are no restrictions to performance of Sorabji's music or of access to his scores and literary writings as these are all published and distributed by The Sorabji Archive (www.sorabji-archive.co.uk) which was set up for the very purpose of disseminating his work and information about him. Had that archive not been founded, access to almost all of this material would have been impossible; indeed, copyright strikes have been necessitated only because his material has been distributed by that archive and they are applied for only when uploads of his copyrighted material are made without consent having first been sought.

Editors/typesetters of Sorabji's scores likewise have rights in their editions.