>>Why 1972? <<
Among other things, Morrison died.
It was also the last good year for GFR.
cRap is just stylized beat poetry — Maynard G. Krebs writ large.
Outside of U2, I don’t know if there is a major band I care for less than The Doors. Sadly Morrison’s death wasn’t enough to end drunken buffoons posing as poets.
I’m sure you’re aware Houses of the Holy came out after your arbitrary cutoff date.