Smokestack Lightning

Wolf said the song was inspired by watching trains in the night: "We used to sit out in the country and see the trains go by, watch the sparks come out of the smokestack. That was smokestack lightning."

wikipedia

In the early to mid 1960s, it became a live staple of British beat groups, including The Yardbirds, Manfred Mann, The Animals,The Groundhogs and The Who as well as American groups, such as Grateful Dead, Quicksilver Messenger Service, The Electric Prunes, and The Wailers. The song has also been performed and/or recorded by Muddy Waters, Jimmy Rogers, Fenton Robinson, Lucky Peterson, John Lee Hooker, John Mayer, Bob Dylan, Soundgarden, Widespread Panic, Gov't Mule, Lester Butler, George Thorogood, Aerosmith, and Big Head Todd and the Monsters.