Lorde made Melodrama, the very best album of 2017, with some help from producer of the moment Jack Antonoff. She continued the North American leg of her world tour with a show at the Barclays Center in Brooklyn tonight, and Antonoff came along, accompanying her on acoustic guitar and piano.

Lorde has been breaking out a lot of (mostly city-specific) covers on tour — Frank Ocean’s “Solo,” Kanye West’s “Love Lockdown” and “Runaway” in Chicago, Drake’s “Shot For Me” in Toronto, Prince’s “I Would Die 4 U” in Minneapolis — and tonight was no exception. This time, she performed St. Vincent’s “New York,” which Antonoff co-wrote and co-produced, with Antonoff himself on guitar.

“New York” transitioned into an acoustic rendition of her own song “Hard Feelings” (with a little “New York” coda at the end), and you can watch Lorde and Antonoff perform both songs together below.

omg @lorde and @jackantonoff covered st vincent’s ‘new york’ and an acoustic version of hard feelings and i was emo af pic.twitter.com/24LBvJ17kU

— sean ✨ (@seancellmore) April 5, 2018

Yyyeah, this was cool. Lorde and Jack Antonoff covering the glorious space alien Annie Clark. #lorde #jackantonoff #melodrama #melodramatour #stvincent #masseduction

A post shared by Michael Bartolone (@sebastian11212) on Apr 4, 2018 at 7:06pm PDT

That moment when @jackantonoff surprises @lordemusic on stage. 😍❤️😭 #MelodramaWorldTour #LordeBKLYN

A post shared by Barclays Center (@barclayscenter) on Apr 4, 2018 at 7:28pm PDT