
You guys have gotta check this site out,
SFG Publications, they give you loads of sounds, songs jazz suites and big band arrangements along with free 5 piece scores you can download, view and play..awesome site also they link to
www.duncanlamont.com, this dude has a book called The Street Fighter's Guide to Improvisation and u get the 1st chapter on his site, he has a scale that lets you jam over any chord, I've tried it with my band..it really works!!!!!