This isn't ZZ top. It is the Short Version of Ram Jam's one hit wonder Black Betty which is a cover from Leadbelly. The original Short Version is from the Black Betty single from 1994. It was 2:34 with trailing silence. On a 192 kbps file leaked in P2P in 90's it was mislabelled as ZZ top. It was common at that time on P2P to get mislabelled files. ZZ Top actually never made a recording of Black Betty.