M ~ Milli Vanilli
Before it was okay to lip sync we had Milli Vanilli.
Do you love his voice? Cool, it's not his. They were so convincing with their performances, that they even won Grammys!
Durning a concert, "Girl you know it's..." started playing over and over. The two kept singing and dancing but after the fourth or fifth "Girl you know it's.....", the duo ran off the stage. The girl and entire public knew it was true that they were faking it.
Later, they admitted that the vocals were not their own. They were stripped of their Grammys and never made a comeback. One of them died, I think.
All I remember is they tried to sing for real and sounded like dogs being tortured.