The greatest rock band ever to come out of NYC -- The Velvet Underground -- had a short life in the late 1960s. It would only be decades later that they would be considered one of the greatest and most influential bands of all time.
Still, during their brief existence, the Velvets toured the country. In the late 1960s they travelled to Dallas and their outdoor performance, and later another performance at a club, were recorded and can be seen/heard here.
There's actually very little footage of the Velvets during their time as a band so this is a rare and interesting treat, a small window into the past.