I'm dying laughing after watching Ella's in-ears ㅋㅋㅋㅋㅋㅋㅋㅋㅋㅋ

H2O was like that before too, but if there's a delay in the in-ears, you should just take them out and sing.
I think she's gotten so used to performing while relying solely on the in-ears that she can't do that.