LD Miller, Brendan Powers, Christelle Berthon, and 15 yr old Jay Gaunt. LD beat boxes while playing at the same time. This is some of the best harp jamming you will ever see or hear – It took place at 3 in the morning during the 2009 SPAH convention in Sacramento Ca. What did you think? Please leave a comment in the section below and remember to share the video and sign up for our free newsletter!