rec·i·proc·i·ty: a situation or relationship in which two people or groups agree to do something similar for each other, to allow each other to have the same rights, etc. : a reciprocal arrangement or relationship

So we wished Vitamin D a happy belated bornday the other day. He responded by producing us a theme song! Shouts to 206 rapper Kae One for the track, should have sent this to us first! Ironically, Kae One does not seem to exist on the internet, so he probably doesn’t know who we are. Hmph.