The late '90s were a strange time for rock music.Grunge had morphed into mostly horrible rap-metal. The mainstream was littered with over-singing divas like Celine Dion. Hip-hop was healthy, thanks to the likes of the Wu Tang Clan, though it was still reeling from the death of Tupac. Brit-pop was big, and some of it was pretty great, though much of it was far from inventive or groundbreaking.What they were then calling "electronica," and we now uniformly label EDM, was supposed to be driving the final nail into guitar-based rock music’s velvet-lined coffin. Country-pop was huge. R&B was aw