The sound developed by thrash groups was faster and more aggressive than that of the original metal bands and their glam metal successors .
Thrash metal bands played a faster , more aggressive type of heavy metal rock .
Thrash metal bands played a faster , more aggressive type of heavy metal rock .
이 단락을 단순화: The sound developed by thrash groups was faster and more aggressive than that of the original metal bands and their glam metal successors . 산출: