I enjoyed the first 20 minutes. After that, it felt like a wearisome collegiate skit. I love Friedman's music (his lyrics less so), but find that his scores stand apart from the shows, that they aren't integrated. In Bloody, the rhythm of the evening felt like skit/somewhat-but-not-entirely-related song/skit/somewhat-but-not-entirely-related song/etc.
Ultimately, I felt that the show had nothing really to say, no point to make. It's been argued that Andrew Jackson, being a populist, was like a rock star, although that's not remotely accurate, any more than saying that Ronald Reagan was a rock star. Jackson was a perfectly awful person - racist, venal, violent, ultra-right-wing, a cross between Rush Limbaugh and William Calley Jr., - and the musical uses his name only to tell a sort of generic, clichéd young-sexy-romantic-rebel story.