It’s Benmont Tench of Tom Petty and the Heartbreakers’ Yearbook Photo!
Yes, it's Tom Petty and the Heartbreakers keyboardist Benmont Tench, who has been with the group since its foundation in 1976, and has performed on all 12 of their albums.
In addition, Tench has performed on albums from a long and diverse list of artists including Bob Dylan, the Rolling Stones, Johnny Cash and many, many more. Wanna be impressed? Check out his credits over at AllMusic.com. Petty and the Heartbreakers are currently putting the finishing touches on a new album, their first since 2010's 'Mojo.'