Old head I might guess is polite talk for "old stoner" which makes me guess you dig r
I'm guessing you've already listened to Pink Floyd but if not check out their albums "Wish you were here" and "Dark side of the moon" (the one every tumbler girl has a shirt of), I also dig some solid space,joy division and Mac demarco.
also for the next time you have a "buisness meeting"
[video]https://m.youtube.com/watch?v=f9X1C7pTu-M[/video]