Post Malone became the first artist to ever perform at the TSX stage in a surprise pop-up concert on Tuesday evening in New York City. A crowd of thousands looked on as the 28-year-old rapper, singer/songwriter took the stage nestled in the 46-story building covered with an 18,000-square-foot digital billboard sitting high above Times Square. The artist born Austin Richard Post performed new songs 'Chemical,' 'Overdrive,' and the unreleased record 'Enough Is Enough' all off his upcoming fifth album Austin as well as chart topping hits "Circles," 'Sunflower,' and 'Congratulations.' The 10-time Grammy nominee drops his 17-track album on July 28.