Nice to catch up yesterday with guitarist Mark Dawson of 2012 WRC Best Tribute Award Winners Purple Zeppelin. The guys were recently featured on BBC4's 'The Joy Of The Guitar Riff' - hence our 'Video Of The Day'. From Chuck Berry through to the White Stripes, the documentary traces the ebb and flow of the guitar riff over the last 60 years of popular music. With riffs and stories from an all-star cast including Brian May, Dave Davies, Hank Marvin, Joan Jett, Nile Rodgers, Tony Iommi, Robert Fripp, Johnny Marr, Nancy Wilson, Kevin Shields, Ryan Jarman, Tom Morello and many more including of course PZ! Go here for the guys 2015 tour dates - do not miss them!