http://geargods.net/playthrough/devildrivers-ruthless-drum-playthrough-is-accurate-contains-no-discernable-ruths/ 

and

http://www.sickdrummermagazine.com/index.php?option=com_hwdvideoshare&task=viewvideo&Itemid=100024&video_id=2417

and

http://www.drummagazine.com/features/post/matt-garstka-lets-get-technical/ 

and

https://www.youtube.com/watch?v=jiPaaD3yJfc 

 

Roadkill