Conlon Nancarrow

“ The longest-living author of this work died in 1997, so this work is in the public domain in countries and areas where the copyright term is the author's life plus 26 years or less. This work may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.
It is imperative that contributors search the renewal databases and ascertain that there is no evidence of a copyright renewal before using this license. Failure to do so will result in the deletion of the work as a copyright violation. ”