With her green roots, Tourette syndrome and black tears, the LA pop rebel Billie Eilish is an uncommon star. She has made mainstream culture out of the stuff of nightmares and therapist’s offices; in a couple of weeks she’ll be the youngest ever solo Glastonbury headliner. Eilish, now 20, has grossed seven major Grammys and an Oscar. To add to all these precocious achievements, tonight she has 21,000 people singing along to a song nobody knows.
The smartphone age has mostly put paid to major artists road-testing new tracks before release. But Eilish and her producer brother, Finneas, play a brand new song called TV – one so hot off their psyches it reflects the previous fortnight’s news.
