If You’re Going to Pretend You’re NOT Lip-Syncing, Don’t Do This
First rule of lip-syncing on stage: hold the microphone right side up. Imagine the horror of Chinese folksinger (well, she might actually sing) Sa Dingding, especially since lip-syncing was banned by the government after all those fake performances at the 2008 Beijing Olympics
Watch carefully. And note how the volume of her singing never changes.
Oopsie. More at The Mirror (via Tom)