Alt-metal bands commonly emerged from hardcore punk -LRB- Corrosion of Conformity -RRB- , post-hardcore\/noise rock -LRB- Helmet , The Jesus Lizard -RRB- , grunge -LRB- Alice in Chains , Soundgarden -RRB- , or industrial -LRB- Ministry , Nine Inch Nails -RRB- .
Popular alternative metal bands are Alice in Chains , Nine Inch Nails , System of a Down , and Korn .
Popular alternative metal bands are Alice in Chains , Nine Inch Nails , System of a Down , and Korn .
Make this easier to understand: Alt-metal bands commonly emerged from hardcore punk -LRB- Corrosion of Conformity -RRB- , post-hardcore\/noise rock -LRB- Helmet , The Jesus Lizard -RRB- , grunge -LRB- Alice in Chains , Soundgarden -RRB- , or industrial -LRB- Ministry , Nine Inch Nails -RRB- . Output: