users.clas.ufl.edu/burt/filmphilology/heideggerworkofart.pdf

Heidegger - The Origin of the Work of Art (essay)

an aesthetic entry point to Heideggers Philosophy

https://en.wikipedia.org/wiki/The_Origin_of_the_Work_of_Art

http://gen.lib.rus.ec/book/index.php?md5=7DAAC37C9FC329D6CE495ACC78CB0795

>Roman Ingarden - The Work of Music and the Problem of Its Identity

>Before World War II, Ingarden published his works mainly in the German language. During the war, he switched to Polish, and as a result his major works in ontology went largely unnoticed by the wider world philosophical community.

https://en.wikipedia.org/wiki/Roman_Ingarden