WIN A POSITIVE GRID SPARK GUITAR AMP!Visit positivegrid.com/guitarnerds to enter the competition!Hi, Joe from Guitar Nerds here. On this week's episode, Mark Packham is back, and he's hosting a whole new super charged Guitar Nerds Quiz. I'm also back, ands I'll be doing my best to retain my title as quiz master! To get involved in the discussion join The Guitar Nerds Group on Facebook and follow Guitar Nerds on Instagram. See acast.com/privacy for privacy and opt-out information.