"Prequel" is Epik High's story. The final verse of the song tells the story with an old record-player sound effect that makes the listeners feel nostalgic, but more importantly, the story includes the titles of all 10 of their albums in a wildly smart way. Here are all of the Easter eggs in this verse:
"We mapped the human soul." — 2003's "Map of the Human Soul"
"Got society high." — 2004's "High Society"
"Sang our swan songs." — 2005's "Swan Songs"
"Remapped to stay alive." — 2007's "Remapping the Human Soul"
"The world tried to turn us to pieces." — 2008's "Pieces, Part One"
"But the E-P-I-K never ceases." — 2009's "[e]"
"Had 99 problems but it's do or do not." — 2012's "99"
"Took our demons by their throats stuffed 'em in a shoebox." — 2014's "Shoebox"
"We did something wonderful now there's nothing to fear." — 2007's "We've Done Something Wonderful"
"When you're lost remember, Epik High is here." — 2022's "Epik High Is Here"