You know that I really liked this. Seems the audience being involved with applause makes it good for me. I have only listened to it once and honestly, I didn’t get the sour note you were talking about, but I will listen again tomorrow. They are good together....both are great singers.
I knew you would enjoy it. :) The sour note at the end was from one of the other Idol contestants, I am sure - Carrie and Taylor were pretty much in the background after the first few choruses and the others joined in.