Lateralus arrived after a four year legal standoff with their label kept Tool out of the studio, and it debuted at No. 1 on the Billboard 200 with more than half a million copies sold in the first week alone. The title track's structure follows the Fibonacci sequence, a detail that fits a band known for building songs with mathematical precision. "Schism" picked up the Grammy for Best Metal Performance, and Alex Grey's layered cover art hides the word "God" inside its anatomical imagery. It's gone triple platinum in the US since.