Cassyette knows when she’s about to have a manic episode. Such a part of the Essex-born alt.character’s life have these periods become over the years that she’s learned the best thing to do when one starts coming on is to go with it, rather than try to stop it. You can’t really, anyway. While she was in the studio on a writing retreat last year, the familiar feeling began to come on. And so Cassyette decided to use it to make music. “I started going into it, and I was like, ‘I’m actually going to ride this moment. Let’s just write about having a manic episode,’” she says. “It took about 20 minutes.” This is Boom, the new track Cassyette’s releasing ahead of her massive UK tour, which takes in the most banging bits of The Prodigy, Enter Shikari, Lim...