I've been looking over the internet to find maybe a track generator that wil play different styles and keys, so that you can improvise over it. Anyone know the whereabouts of something like this?
I'm not sure you can get something exactly like that but at www.guitarbt.com you can download tracks in a variety of styles from the "Jam tracks" section.
I think someone on here told me about freejamtracks.com. It's pretty good.