Offer to face your counterpart at UMG in single unarmed combat as a way to settle the matter honorably.
Why is it that when I say stuff like this it always gets downvoted? It's a lot cheaper than involving lawyers, and it has the benefit of letting all participants work through their testosterone and adrenaline, so that after the match they can sit down and discuss the matter more amicably. A proper refereed and organized fight is a pretty deep bonding experience, for guys anyway. You're more likely to get, and give, a…
a lot of musicians and movie stars challenge their opponents to fist fights on a regular basis; and sometimes you get a mickey rourke or an uwe boll, brawlers who know what they're doing, or muscled rappers with a shady past and diamond rings on their fingers that aren't for show.
so UMG hires the biggest, meanest colombian war criminals, send them to fist fight college and employ those guys as "sekundanten" (sorry, no idea about the english term here - stand ins for duels).
poor bjorn lynne wouldn't stand a chance.