I guess I’m the lone numpty because I just watched the clip and I have no idea how it was done :o
But the important question: How did you like the performance?
I did watch the show last Sat. and I had heard of her but didn’t know what she sings. When she came on, it didn’t seem like something I’d be interested in so I went and did something else (as I often do during commercials or whatever).Now after seeing a brief clip (with sound turned down), I’m going to go back and watch the whole thing at home. Is she only 17? She started young.
Nono, she did the Jamiroquai thing (a video for a track off their album called Traveling Without Moving, to boot!)
That video was like the most mind-blowing video of the 90s.
I love Billie Eilish and the song isn’t so much about love. She’s wishing someone hadn’t told her he loved her and ruined a good thing. Been there! 
I’ll take your word for it.
As soon as I saw her in a tiny room, I suspected the trick coming but she did a good job. Did it live too, unlike most of the other examples above.
Second song was so different from her hit, shoulda been more engaging. Maybe the studio version will work.
Wasn’t he supposed to quite playing Trump? 
I was surprised he was back this season.