Knockin' on Heaven's Door singer
Else clues• 2000 Best Song Oscar winner
• Duluth-born musical genius
• He sang Hurricane about boxer Rubin Carter
• Lead singer on Tweeter and the Monkey Man
• One of the musicians profiled in the book Positively 4th Street
• Robert Zimmerman
• Winner of a 2008 Pulitzer Prize Special Citation for his profound impact on popular music and American culture
• Woody Guthrie protege