Jeff Lynne and Tom Petty talked about a year ago on how they wrote songs for The Traveling Wilburys. Take a look: https://www.youtube.com/watch?v=8Uuy3MEVY-E "George was so funny, sometimes someone would arrive just to hang out in the studio, and George would go, ‘look in this door, look through here, it’s Bob Dylan’ and it was so sweet ‘cause I mean, that’s George Harrison by the way" – Jeff Lynne”. Read more about Traveling Wilburys