Mr Big are currently touring their album What If..., and on the tour, they have been swapping instruments on a cover of Deep Purple's Smoke On The Water.
This footage was shot by a fan at the Canyon Club in California on July 31st.
Paul Gilbert played drums, Eric Martin played guitar, Pat Torpey on bass, and Billy Sheehan on vocals.
For more Mr Big news head to their website.
More News: Like This