: The song is played in Drop D , giving it a heavier, more modern metal sound compared to their standard tuning tracks.
: The "hounds" are creatures that inhabit the corners of time and hunt travelers through their dreams. Metallica All Nightmare Long Mp3
: The title is a clever play on the phrase "all night long," suggesting a nightmare that never ends. : The song is played in Drop D
: It was first played live on December 5, 2008, in Calgary, Canada, and has since been performed over 100 times. giving it a heavier
The music video, directed by , is unique because it does not feature the band. Instead, it tells a "mockumentary" story: