Played during Lemmy's (of Motorhead) 50th birthday bash. Metallica put
on wigs and dressed like
Lemmy and played 6 Motorhead songs.
4 of the songs played that night were released as a B side of the Hero
Of The Day single.
That single is also known as "Motorheadache". The same 4 songs were
also later added to the
second disc of Garage, Inc.