Watch Spinal Tap Play "Big Bottom" With Help From Some Serious Bass Talent (VIDEO)

Bassist Derek Smalls and Spinal Tap Play Their Hit "Big Bottom" With Some Help From Some Serious Bass Talent

When Spinal Tap took the stage at the Live Earth Concert of 2007 at Wembley Stadium, they decided to ask for some back up on the bass front for their song "Big Bottom." The result is a stage full of bass players including Spinal Tap's Derek Smalls, Robert Trujillo, Nate Mendel, Adam Yauch, Mike Rutherford, John Taylor, Gordon Moakes, Stuart Price and even James Hetfield and Kirk Hammett of Metallica rocked some 4-strings.