This video is an edited version of a practice session done prior to the main event of the 2001 Merlefest celebration. (Merlefest is a annual tribute to Doc's son Merle who died too young in a tragic accident) Doc and Merle toured together for many years, and played at 1000's of summer music festivals.This was the first time Doc and Dolly ever met and worked together. The song is "Last Thing on My Mind"