Beyoncé stunned shoppers in the Harlem branch of Target yesterday, June 30, when she appeared midway through a youngsters' dance class performance. 

The Boys & Girls Club were midway through a routine set to the hitmaker's new track, 'Countdown', when she surprised them on stage and was met with raucous screams. 

She even stayed to chat with the group following their performance and judging from their reaction caught on video, made them very happy.

Watch the exciting moment courtesy of audience-filmed footage here: