Currently were watching Nirvana on MTV unplugged. I've always had a bit of a bitter attitude towards live performances just because they usually expose how the singer cant really sing. Since there's not as much editing and autotuning it just annoys me. I always thought of live performances as exposing an artists true talent; which in recent times isn't even present.
Nirvana has a great live performance though. I also learned this at ACL but some artists do have real talent and its not just autotuning :D.