Jessie J gave New Yorkers an impromptu show at the Times Square subway stop, setting up shop with only a boombox and singing the title track from her upcoming debut Who You Are. The winner of BBC’s Sound of 2011 award is the first up-and-comer to perform as part of Giant Step and Arcade44’s The Boombox Series, where artists like Jessie play in gritty NYC locations.

“Performing is where I feel most comfortable, and I love the reaction of people,” explained the 22-year-old Brit. “Some people might put their fingers in their ears, some people love it, some people cheer, some people leave. And it’s good, it’s nice. I like honest reactions, and that’s what I think I’m getting.”

The “Do It Like a Dude” singer was spotted at Thursday’s nominations announcement for the BRIT Awards 2011, where she walked the red carpet along with Ellie Goulding, Tinie Tempah, Olly Murs, and more. Jessie, who performed at the event, was previously honored with the prestigious Critics’ Choice Award.