How many songs do you have memorized?

In prior eras before writing was invented, this ability was put to use memorizing all of mankind's history, law, mythology and cultural stories. Being good at memorizing songs was one of the most important and prized skills, and rhyming may have been invented as a way of detecting errors in the process. This capability of long-term cultural memory is at least arguably what led to proto-humans eventually becoming the dominant species, because it allows a greater body of knowledge to be passed down regarding tools, technology, knowledge of locations of good hunting and gathering even if the tribe hasn't been there in living memory, etc. Today we memorize meaningless pop songs about teenage love or whatever, which seems like a bit of a waste. But once our current "leadership" reduces technological civilization back to rubble, we'll have to go back to using this capability. Someone should start writing songs about how to make antibiotics from rotten oranges or whatever.