Oscar J wrote:
No it wasn't. He has some unstable moments due to him being nervous probably, but it's mainly the tape fluttering that makes him sound weak. Just check the YTMBA performance released in 2011 - likely the best one ever.
It is definitely a great version! That style of singing suits him really well.
I agree that the sound quality doesnt do him any favours. But during this concert he plays way too safe. Some parts of The Prophets song is almost embarrassing because he sings so flat to avoid high notes. You can not blame the sound there.