One question that needs to be asked is who's supporting the... well, if it's rap, I can't exactly call them musicians, can I? Maybe performers is the appropriate word. If you look at history, bards/minstrels basically got supported by the nobility, who later on supported more musicians, so that well up to the 1700s, musicians (and other artists) were essentially supported by the aristocracy.
Another question that needs to be asked is why the musical sensibilities of contemporary popular culture seem to be so much different from the music that has come down to us since the Middle Ages. AFAIK, there really are no ancient (European) parallels to rap, hip-hop, rock, disco, or really anything popular since the 1950s. Now maybe it's just that while similiar types of things existed in popular culture, they didn't get written down (or about). But we do have some fairly old collections of folk songs &c, and they're nothing like what is popular today.
PS: Another question is whether rap, rock, and so on could actually exist if it had to be played on purely acoustic instruments, with words sung by unamplified human voices? Certainly it seems to me (and I do admit to a prejudice here) that much of its effect depends on it being played at volume ranges that cause discomfort to people with sensitive hearing.
Rap would obviously have been possible; you even stated yourself "the only things you need to perform rap music are drums (which probably existed in the Middle ages) and lyrics." What do you want to know? – theonlygusti – 2015-05-10T11:03:13.090
1They would have to be very careful with the letter of the songs, but apart from that popular music was quite creative (including satirical songs). Of course, lots of slang would be used, not because they found it cool but because none of the people had no formal education. – SJuan76 – 2015-05-10T11:18:46.217
See "Robin Hood: men in tights" for an example of medieval rap. :) It works, but culturally the "edginess" of rap (as opposed to just free verse rhyme) is a product of its time and probably wouldn't have existed in the middle ages. – Isaac Kotlicky – 2015-05-10T11:56:50.270
@theonlygusti I'm not an expert on rap, so there may be some factors, which I didn't consider. – DP_ – 2015-05-10T12:30:32.850
1+1 for an off the wall and yet totally legitimate question! – Cort Ammon – 2015-05-10T18:59:19.540
2people in medieval times were better mannered than rap "artists" and "authors" tend to be. So though the style of scanding text to a drum beat could exist, almost certainly did exist (it's a common thing in many cultures) the "rap culture" could not exist because the people lacked the mindset that permeates it. – jwenting – 2015-05-10T20:08:25.640
3"Medieval people were better mannered than this group of modern people" is probably the most brutal insult I've heard in a long time. If you could support that theory, I would have to weep for humanity today. – Erik – 2015-05-11T06:57:41.763
1@Erik: May be an insult, but it's probably also fact (lacking a time machine, I can't actually check on Medieval manners), and I do weep for that part of humanity today. – jamesqf – 2015-05-11T17:22:19.523
"Medieval people were better mannered than this group of modern people" I'd like to see some sauce on that as well, every generation thinks that them young-ins are ill mannered and how society is going to hell in hand-basket and yet, we still don't fling poop at each other (usually) – Maxim – 2015-05-11T18:45:26.640
It looks like the vikings may have been flyting as well: http://en.wikipedia.org/wiki/Lokasenna
– apaul – 2015-05-11T20:44:37.2872
Instead of sampling they could have mimicked and re-edited other music they'd heard using a cappella techniques: http://en.wikipedia.org/wiki/A_cappella#Emulating_instruments
– Dan Piponi – 2015-05-11T22:17:54.320