THE FUSE

It’s a humid summer night in New York and the entirety of Bowery Ballroom — all 500 or so attendees — are harmonizing with Gracie Abrams. “I really want you guys to be on the song,” the singer-songwriter says, just before she records the crowd’s sustained hum with a multi-track loop machine. Abrams pairs the sound with her own pitch-perfect voice to create an impromptu backing track for the live debut of her new song “Humming.” The effect makes her eyes light up. “That’s special,” she says, “Our first duet together.”