I'm sure this thread will have lots of blather about how hip hop lyrics are (not) valid artistic expressions.
To support your argument that Hip Hop follows a long tradtion:
LO, praise of the prowess of people-kings
of spear-armed Danes, in days long sped,
we have heard, and what honor the athelings won!
Oft Scyld the Scefing from squadroned foes,
from many a tribe, the mead-bench tore,
awing the earls. Since erst he lay
friendless, a foundling, fate repaid him:
for he waxed under welkin, in wealth he throve,
till before him the folk, both far and near,
who house by the whale-path, heard his mandate,
gave him gifts: a good king he!
Yo! I know you heard of the Scyldings already
When battle went down, the kings were deadly, swords steady
Each one did whatever he said he
Would do, and to grab onto more glory was ready.
Scyld started their line, looked mighty fine
Just a baby found a-bobbin' in a boat
Grew great so kings gave him silver and gold
The Beowulf Rap