Who has been in more music groups Tom Petty or Saffron?
Tom Petty:  He is best known as the lead singer of Tom Petty and the Heartbreakers, but is also known as a member and co-founder of the late 1980s supergroup the Traveling Wilburys (under the pseudonyms of Charlie T. Wilbury Jr. and Muddy Wilbury), and his early band Mudcrutch.
i don't know