The singer — who has had nine No. 1 hits on Billboard's Dance Club Songs chart under her stage moniker ... had viewers at home stirring. "Erika's lip-syncing, come and watch!

He has covered celebrities, TV and movies extensively ... bottom two of the rankings alongside Lana Ja'Rae. And in the lip sync to Sam Smith's "Unholy", Lydia's gambit to free herself from ...