5. Nuclear Assault 

Armed with a Chainsaw bass sounding bass player and wicked guitar riffs and very clever lyrics/songwriting. They are a true original thrash metal band.

[youtube]http://www.youtube.com/watch?v=v23IGVgh0hE[/youtube]

4. Dark Angel 

The perfect example of real thrash metal genius drumming, massive riffs and screaming vocals. One of the best bands to come out of the American early thrash metal movement.

[youtube]http://www.youtube.com/watch?v=bFcRP18iKg4[/youtube]

3. Wargasm

Heavy as hell thrash metal with great songs and great guitar riffs. Their first album is a real classic.

[youtube]http://www.youtube.com/watch?v=SJOFqF994Kg[/youtube]

2. Znöwhite 

Female fronted thrash metal band, one of the earliest of this genre. Underrated underground heroes with a great guitar player!

[youtube]http://www.youtube.com/watch?v=chWGIKUvgLI[/youtube]