The demand in Europe is what I’m pretty sure it is, sorry if it’s wrong
I know for sure one group would be merchants. They were the ones travelling to potentially infected areas---buying things with the plague's germs, and selling it to people on areas that WEREN'T previously infected. Sailors too I believe, for very similar reasons and because rats were infected, and rats caught rides on ships and spread the disease wherever the ship docked.
Hope this helped. :)
His voice is probably the best vocal range of most guys back then :)
