What makes Left Behind by Slipknot notable?

'Left Behind' received critical acclaim and peaked at number 24 on the Billboard 200 chart. Its success helped solidify Slipknot's influence in the metal scene, contributing to the popularity of alternative metal during the early 2000s. Released on October 29, 2001, 'Left Behind' marked Slipknot's transition into mainstream recognition following their self-titled debut in 1999. The album came during a period of heightened visibility for the band, as they began to establish themselves as leaders in the nu metal genre.