Unknown to most unless they enter his home, Jeager dose indeed play the Fiddle/Violin to pass the time when. when drinking isnt all that fun anymore over the long 70 years as a daemon hunter, sometimes it just nice to chill and put your mind to something more plesent when you get a chance.
Insperastions: Videos like this: https://www.youtube.com/watch?v=0MNLoX5K9EQ and Enter the haggis music in genral. XD Pluss Space's awesome art: https://www.weasyl.com/submission/181192