When he sang Eyes Nose Lips he stopped in the middle and started from the beginning again because his in-ear volume was too low and he couldn't hear. I think it may be the same issue. I think they needed to adjust the in-ear volume after Ringa Linga (usually louder songs require lower volume and softer songs require higher in-ear volume) You can see him waving to someone at 1:59 (perhaps sound engineer) and then after that he sounded just fine. I've heard him sing this song live many times before and he's always been perfect. If you watch the concert in it's entirety, you'll realize this little blip is nothing...he performed so well and really gave it his all. He's an amazing performer, dancer, singer, and he's 100% committed to he stage. Nothing has changed about him.
