They don’t necessarily have to be good albums, but which five albums do you think had the most unique concept behind them when they came out?

HINT: 808s & Heartbreak doesn’t count because:
A) it’s not a hip hop album.
B) copying T-Pain isn’t a creative concept.
My list:

1. Quasimoto - The Unseen
2. Prince Paul - A Prince Among Thieves
3. DJ Shadow - Endtroducing
4. The Lost Children of Babylon - The 911 Report: The Ultimate Conspiracy
5. Freestyle Fellowship - To Whom It May Concern