Heathen

They sounded ahead of their time 40 years ago. They still do today.

Speed and aggression are the genre's stock-in-trade, but these bands weren't afraid to get experimental.

The run is set for this July.

Some of metal's biggest albums were released in 1991 while the underground exploded with new styles.

Thrash in the '90s was rough, but it wasn't all forgettable.