This is the opening track of American rock and jam band Gov't Mule's eighth studio album, By a Thread.
This track features the guitar playing of ZZ Top's Billy Gibbons. Guitarist Warren Haynes explained to Billboard magazine how the collaboration came about: "That was the last song we wrote and recorded for the CD, and when we listened back to it we thought, 'Wow, it's kinda got an old school, early-ZZ Top vibe about it.' We sent him the track and he loved it. I flew to L.A. and sat in a room with Billy, and we overdubbed our guitars at the same time because I wanted us to be staring each other in the face when we did it. He was so amazing and added so much to the track that it's hard to think of it without him now."
"Crank That (Soulja Boy)" was the most successful digital track of 2007 in the US with 2,909,000 downloads. On January 6, 2008 it became the first song ever to sell 3 million digital copies in the States.
The Prince-penned "Manic Monday" was the first song The Bangles heard coming from a car radio, but "Eternal Flame" is closest to Susanna's heart, perhaps because she sang it in "various states of undress."