Hey :) Just some notes: 1. Actually there are people denying her talent ( saying she can't sing etc. ) 2. Most of the " whistles " u mentioned in the video are actually falsettos 1:45 & 3:35 that was falsetto 2:30 & 4:35 & 5:58 was whistling 3. It's unclear whether or not the whistle notes she sang in the performace ( 5:58 ) are lipsyced. However she is able to hit whistles notes live