| In the case of a literary, dramatic or musical work, or an engraving, in which copyright subsists at the date of the death of the author or, in the case of a work of joint authorship, at or immediately before the date of the death of the author who dies last, but which has not been published or, in the case of a dramatic or musical work, been performed in public or, in the case of a lecture, been delivered in public, before that date, copyright shall subsist until publication, or performance or delivery in public, whichever may first happen, for the remainder of the calendar year of the publication or of the performance or delivery in public; as the case may be, and for a period of fifty years following the end of that calendar year. | |