I think wallpaper is interesting title for this in my thought
Answer: Hellenistic period
It is a notation for the music to become gradually louder.
Answer:
European musical traditions also make up a vital part of jazz. Elements like swing and improvisation found their way into jazz from Africa, but jazz's major instruments, including the piano, saxophone (invented in Belgium about 1840 by Adolphe Sax), and assorted horns came to jazz by way of Europe.
Explanation: