Billie Eilish was the guest on The Tonight Show With Jimmy Fallon tonight. Before performing the title track from her new album Happier Than Ever, she sat down for a conversation about the new album. She discussed her reaction to its success, the chaotic stunt driver-filled video for “NDA,” synesthesia (and what shape and color she associates with Fallon), returning to performing and going on tour, and more. Watch it all happen below.

Happier Than Ever debuted at No. 1 thanks in part to a massive vinyl sales week. Eilish’s new album is the second-highest vinyl sales week since at least 1991.