Answer:
https://photos.app.goo.gl/4nhZthsM7kAthmyaA
I believe it goes to the military. Hope this helps!! :)
There are multiple answers that you could argue, but my best guess is that in these years he was influenced by jazz, the "music on the street", since this is when he wrote music for the Theatre suite.
By the end of the fifteenth century, artists and collectors recognized that drawings could embody the creative genius within the artist.