Tomorrow, Jay-Z will be rapping, not with Kanye, not with OneRepublic, but with students at the Mesa Arts Academy in Mesa, Arizona. Jay and LeBron James pledged to donate over 150 musical instruments to the school, as well as perform with the talented students. The academy is a free charter school that makes sure to include the arts in education from kindergarten to eighth grade. James and Jay-Z will also donate a signed piano to Mesa