From 1975, here is Ann Arbor's Shakey Jake, with the prophetic "Poem for the Young Girls".

Be calm, coalugrate yerserlf. Know how to 'duct yerself in public. Jake knows when judgement day is, but he can't tell you. The lights are gonna' get dark. Now y'all won't be able to survive in the dark, but he will. You see he wrote the rule book, and he wrote the trick book, he knows a whole lot of tricks. But, he will try'n hep y'all. Try to be rea'ble.