Whether or not you scored tickets to Z100’s Jingle Ball at Madison Square Graden, the Hammerstein Ballroom is the place to be during the day. Some of pop music’s hottest up-and-coming acts took the stage for a free show to kick off the festivities, while fans entered for chances to win tickets to the main event. Alex Aiono got the crowd pumped with his epic cover of Drake’s “One Dance” before breakout singer/songwriter LAUV performed a stripped down version of his single “I Like Me Better”. MAX schooled everyone with his dance moves before leading a sing-a-long of his Top 40 hit “Lights Down Low”, and to end the afternoon of music, Sabrina Carpenter performed an intimate acoustic set. Check out some photos from the show!