#1
What scales does did he use most when he played with Testament? I know he was very jazz influenced and plays jazz now.
#2
I dont no about him in particularly but i know that testament used a lot of minor scales
"Men profess to be lovers of music, but for the most part they give no evidence in their opinions and lives that they have heard it." ~Henry David Thoreau
#4
Quote by gibsonpenguin
Is that the same Alex Skolnick who plays in the Trans-Siberian Orchestra?

Yep
Also, Im not too sure. Id try the natural minor scale. I use it over Testament backing tracks and it sounds decent.