Gustav Mahler would be my answer. Strauss was also composing during the late 19th and early 20th but Mahler created more of a fusion between the two.
Marlene chose the Greeks.
The Greeks were the culture that uses lavish perfumes and cosmetics in their religion rituals and who apply kohl to their eyes and vermillion their cheeks and lips.
I think a good addition to a collection of writing instruments that were unique to the twentieth century would be pens and pencils like we have now because back then they dipped feathers in ink and then wrote with them. They were very special because people wrote there feeling and grocery list and drew thing as art. And maybe more to add on would be paint brushes to make beautiful art like they did back then. I hope this helped u and that all your questions are answered.
The curved line is a slur connecting the notes
