Who has been a featured musician in more bands Tom Petty or Tom Barman?
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. Tom Barman: Thomas Andrew Barman, normally known as Tom Barman (born 1 January 1972), is a Belgian musician and film director.
Tom Petty