There are two artists sharing the name Dave Mason:
Dave Mason of Traffic fame.
Dave Mason (born David Thomas Mason, May 10, 1944) is a musician, singer, songwriter, and guitarist from Worcester, England, who first found fame with the rock band Traffic. In his long career, Mason has played and recorded with many of the era's most notable musicians, including Jimi Hendrix, The Rolling Stones, Eric Clapton, George Harrison, Russ McLellan and Mama Cass Elliot. Read more on Last.fm