Jimmy Fallon will have musical guests on the Tonight Show, sing other people's songs while doing an impression of that artist, but this is a new level.
The other night Alessia Cara sang "Bad Guy" by Billie Eilish while going in and out of impressions of Lorde, Alanis Morissette, Shakira, Nicki Mijaj, Ariana Grande, Cardi B, and of course Billie Eilish.