I don't know if there is a thread for this already, but Hypebeast posted a recorded demo made some time before Reasonable Doubt, and Jigga is going off. Link below.
http://hypebeast.com/2015/1/jay-zs-pre-reasonable-doubt-demo-tape
http://hypebeast.com/2015/1/jay-zs-pre-reasonable-doubt-demo-tape