[quote=@Feisty-Pants]
<Snipped quote by Saltwater Thief>

Hm. Maybe? He's likely to have worked with Koto from time to time.

He should be like the janitor from Scrubs.
[/quote]

Seems pretty likely. Possibly spent some time doing instrument maintenance together at some point? 

I was thinking something like him, only with competence to him. He'll definitely show up everywhere with no explanation  xD