Dave Mason got his start as the founding guitarist of Traffic, a band he left and rejoined quite a few times over the years.

But his impact on rock music goes far beyond that influential band, as he has also been a session musician for a stunning lineup of other bands, including Jimmy Hendrix, Eric Clapton, Michael Jackson, Leon Russell, both Crosby and Nash, and his own former bandmate Steve Winwood. He released an album with Cass Elliot in 1970, and was a member of Fleetwood Mac in the 1990s.

He also had a few of his own hits, most notably the ageless We Just Disagree from the album Let it Flow, and Only You know and I know, both still played on rock stations today.