"What's up?! Ohio make some noise!" the rapper greeted the crowd, before kicking things off with "Public Service Announcement." "Are we ready to move forward, Ohio?" asked Jay-Z between verses. He then jumped into a remix of "99 Problems," substituting Mitt in the chorus to proclaim the GOP candidate as not a problem and rapping over AC/DC's "Back In Black" for a verse. Jay-Z kept the momentum going with a swerving rendition of "On To The Next One," getting the crowd hyped before ripping into…