Hi Justin,
I purchased Jam Major a while ago and I must say that this is the best backing track investment I've made since ages!
Where to start off?! 5 bucks is hardly any money for a good solid hour of REALLY high quality backing tracks!
The variety between genres are really great. I learned to use my major scale in different kind of ways to figure out what works best with what style of music so that was a whole new learning experience for me, especially on the Reggae, Funk and Major Swinging. Also the variety inside the backing tracks is at least to be called professional. Really has that kind of "Intro, Verse, Bridge" sections etc. So inside the songs I had to change my improvising too. And to say the least it is not only educational, but also a whole lot of fun!
Unfortunately I don't use ITunes at all, but I would definately rate this 5/5 stars! Darn I haven't found any backing track CD being so well put together for only 5 bucks.
So thanks a whole lot Justin, and also thanks to Dave Marks

Thinking about going for gold with the "RUPAT" but I have to get my modes sorted out before starting with that one.
Thanks again!
JJ