UPDATE: It's here! Listen to Ally, Lost Kings and A$AP Ferg's sexy, infectious dance-jam, below:

ORIGINAL: Ally Brooke is the latest Fifth Harmony star to deliver the solo pop goods.

On Saturday, June 3, the singer appeared onstage at Marquee in New York City, where DJ/production duo Lost Kings were performing. There, Ally, Lost Kings and rapper A$AP Ferg debuted their thumping dance collaboration, "Look At Us Now."

"Said we shouldn't talk but now we talkin' / Said we shouldn't touch but now we touchin' / Said we wouldn't, said we wouldn't / Who we foolin'? Probably should / Look at us now!" Ally sings over an infectious, somewhat tropical beat.

Ally was first snapped working with Lost Kings in studio back in February. Watch clips from the impromptu performance, below:

Fifth Harmony Through the Years, from X Factor USA to Today: