Under the name Ansolo, Elgort created a SoundCloud account to publish electronic dance music, and he has remixed songs such as "Born to Die" by Lana del Rey. In a livestream in February 2014, he said he had signed a record deal with Tom Staar's new label, Staar Traxx, and Steve Angello's label, Size Records. His first record, Unite, was released on April 21, 2014, on Beatport, and May 5, 2014, on iTunes. His second record, Totem, was released July 21, 2014, on Beatport and iTunes. His single "To Life", a Bar Mitzvah-themed song inflected with klezmer music, was released in September 2015. Elgort played at the Electric Zoo Festival main stage in 2014, the Ultra Music Festival main stage in March 2015, played in a red-light dance music event in Amsterdam in 2014, opened some The Chainsmokers shows, a Nervo show and some others shows with his friends Nicky Romero and Martin Garrix. He played his first headline show on his 21st birthday on Pacha NYC.