Wayne Kramer, co-founder and guitarist of the Detroit rock band MC5, has died at 75 after a battle with pancreatic cancer. Kramer was a key figure in the punk rock movement and had a significant impact on the genre. After MC5 disbanded in 1972, Kramer struggled with legal troubles and substance abuse, serving a four-year prison sentence. Over the years, he continued his music career and embarked on philanthropic endeavors, including his work with the Jail Guitar Doors organization. His influence on the music world and his dedication to charity work will be remembered by many.