Beyonce was criticized when she sang the American national anthem during Inauguration Day in lip sync. She admitted to this and explained many are also doing this. I remember during our younger years, we would usually see some of our local actresses doing some lip sync during their performances on TV because they know that they really can't sing that good. But lately, local celebrities who are not really singers can even sing live with just an audio adjustment. Some use amps at musicians friend with just mixing and use of sophisticated sound mixing devices. It can turn your voice into a professional singer.