the 1/2 one was great
the 3rd one had impressive dancing, but the vocals were a mess
the 4th one was vocally amazing, but she has sang each song better before, but it was still great, i love what they did with the arrangements, i would love to hear her do it again, when she's not as tired/under stress/nervous
FYI American Navy her first seven albums are discounted on iTunes this won't happen again anytime soon so complete your collection and get those catalogue sales poppin