Bob snubbed Dolly Parton when she asked him to duet with her on a retrospective album.
From The Examiner.com: “In 1997, Parton covered Bob Dylan‘s “Knockin’ On Heaven’s Door” with Ladysmith Black Mambazo on their album Heavenly.
Eight years later, Dolly released Those Were The Days, an album of cover versions from the 1960s and 70s. The concept was to sing with the artists or writers that originally recorded these songs. While Parton was able to recruit Mary Hopkin, Yusuf Islam (Cat Stevens), Roger McGuinn, Kris Kristofferson, Judy Collins, Tommy James, and others for the project, two artists did not participate – Joni Mitchell, due to illness, and Bob Dylan.
On October 17, 2005, Parton appeared on Comedy Central’s The Daily Show:
Jon Stewart: Did anybody turn you down? . .
Parton: Yeah, Bob Dylan . .Actually, to be fair to him, he wrote the song, that’s all he needed to do, but I didn’t actually speak to him personally, I sent a message to him…”