Lip Syncing is more prevalent then you would imagine in MANY BIG national touring acts and shows, Like Disneyland, music concerts etc, etc. ....at a distance in a large venue its hard to notice with performers dancing and wearing thin headset mics but these shows are all organized and times to perfection and yes with the vocals already recorded for each actor on stage....so each show goes off flawlessly, even due to illness, sore throat or what ever the show must go on. There are many many ways to make music.......it's all good. Who are we to judge?