Complex sentence: During their formation, grunge was considered the new punk rock, but Kill Buddha's sound had a distinctly different approach to it that was more pop and less metal, while providing a deep groove with edgy guitars.
Split into simpler sentences: During their formation, grunge was considered the new punk rock, but Kill Buddha did not sound like other acts of the day. Their sound had more pop elements and less metal, while providing a deep groove with edgy guitars.