The slow, woolly opener of Kyuss's Blues for the Red Sun (1992) -- Josh Homme's heaviest low end on the record. Same Chris Goss / Sound City rig as the rest of the album: an Ovation Ultra GP down-tuned to C standard, driven through a Marshall JCM900 4100 into an Ampeg 8x10 BASS cabinet. 'Thumb' leans on the guitar's neck pickup for a darker, subterranean voice -- the dirt is amp gain, with no fuzz pedal in the chain.